Editing Orange (colour)

{{Short description|Colour located between red and yellow}}{{pp-sock|small=yes}}
{{Use British English|date=December 2016}}
{{Use dmy dates|date=July 2020}}
{{Infobox color
| title=Orange
| image={{Photo montage
|photo1a=Delicatearch.png
|photo1b=ISS Expedition 5 crew.jpg
|photo1c=
|photo2a=Japanese maple.jpg
|photo2b=(A) Sadhu India.jpg
|photo2c=
|photo3a=GoldenGateBridge-001.jpg
|photo3b=NED-DEN Euro 2012 (24).jpg
|photo3c=
| size = 300
| colour_border = #AAAAAA
| colour = #FF9900FF
| foot_montage = }}
| caption= Clockwise, from top left: [[Delicate Arch]], Utah; [[International Space Station|ISS]] astronauts wearing space suits; a [[Sadhu]] (pious man) in traditional Hindu attire, India; the [[Netherlands national football team]]; the [[Golden Gate Bridge]]; a [[Japanese maple]] tree.
| wavelength=590–620
| frequency=505–480
| hex=FFA500<!--Per source below, and advice at [[Wikipedia:WikiProject Color/Sources for Color Coordinates]]-->
| spelling=Colour
|cmyk=(0, 50, 100, 0)
|source=CSS Colour Module Level 3<ref>{{cite web |editor1-last=Çelik |editor1-first=Tantek |editor2-last=Lilley |editor2-first=Chris |title=CSS Color Module Level 3 |date= 18 January 2022|url=https://www.w3.org/TR/css-color-3/#svg-color |website=[[W3C]] |access-date=10 September 2022}}</ref><ref>{{cite web |author= |title=Orange / #FFA500 hex color |date=2022 |url=https://www.colorhexa.com/FFA500|website=ColorHexa |access-date=10 September 2022}}</ref><ref>{{cite web |author= |title=Orange / #FFA500Hex Color Code |date= |url=https://encycolorpedia.com/FFA500|website=Encycolorpedia |access-date=10 September 2022}}</ref>}}

'''Orange''' is the [[colour]] between [[yellow]] and [[red]] on the spectrum of [[visible light]]. The [[human eye]]s perceive orange when observing light with a [[dominant wavelength]] between roughly 585 and 620 [[nanometre]]s. In traditional [[colour theory]], it is a [[secondary colour]] of pigments, produced by mixing yellow and red. In the [[RGB colour model]], it is a [[tertiary colour]]. It is named after the [[orange (fruit)|fruit of the same name]].

The orange colour of many fruits and vegetables, such as [[carrot]]s, [[pumpkin]]s, [[sweet potato]]es, and [[Orange (fruit)|oranges]], comes from [[carotene]]s, a type of [[photosynthetic pigment]]. These pigments convert the light energy that the plants absorb from the Sun into chemical energy for the plants' growth. Similarly, the hues of autumn leaves are from the same pigment after [[chlorophyll]] is removed.

In Europe and the United States, surveys show that orange is the colour most associated with amusement, the unconventional, extroversion, warmth, fire, energy, activity, danger, taste and aroma, the [[autumn]] and [[Allhallowtide]] seasons, as well as having long been the [[national colours|national colour]] of the Netherlands and the [[House of Orange]]. It also serves as the [[political colour]] of the [[Christian democracy]] political ideology and most Christian democratic political parties.<ref name="Reuchamps2014"/> In Asia, it is an important symbolic colour in Buddhism and Hinduism.<ref>Eva Heller, ''Psychologie de la couleur: effets et symboliques'', pp. 149–158</ref>

==In nature and culture==
<gallery mode="packed" heights="130">
File:Ambersweet oranges.jpg|The colour orange derives its name from the orange fruit.
File:Delicatearch.png|[[Delicate Arch]] in [[Arches National Park]], Utah.
File:Lifeboats at Arklow Harbour - geograph.org.uk - 1453984.jpg|[[Lifeboat (shipboard)|Lifeboat]]s in [[Arklow]] Harbour, Ireland. Orange is chosen for lifeboats and lifesaving jackets because of its high visibility.
File:LaoWalkingMonk.jpg|A young [[Buddhist monk]] in [[Laos]].
File:(A) Sadhu India.jpg|A Hindu Sadhu (pious man), in [[Rajasthan]], wearing orange as a sacred colour.
File:Naruhito, Crown Prince of Japan 1993 (3x4 cropped).jpg|Emperor [[Naruhito]], then Crown Prince, wears an orange ''[[sokutai]]''.
File:Saffron Crop.JPG|[[Saffron]] is both a [[spice]] and a widely used [[dye]] in Asia, especially in [[India]].
</gallery>

==Etymology==
In English, the colour orange is named after the appearance of the ripe [[orange (fruit)|orange fruit]].<ref>{{Cite book|last=Paterson|first=Ian|title=A Dictionary of Colour: A Lexicon of the Language of Colour |url=https://archive.org/details/dictionarycolour00pate|url-access=limited|edition=1st paperback|year=2003|publication-date=2004|publisher=Thorogood|location=London|isbn=978-1-85418-375-0|oclc=60411025|page=[https://archive.org/details/dictionarycolour00pate/page/n287 280]}}</ref> The word comes from the {{langx|fro|orange}}, from the old term for the fruit, {{lang|fr|pomme d'orange}}. The French word, in turn, comes from the Italian {{lang|it|arancia}},<ref>{{cite web|url=http://www.etymonline.com/index.php?term=orange|title=orange – Origin and meaning of orange by Online Etymology Dictionary|website=www.etymonline.com|access-date=22 January 2018}}</ref><ref>"orange n.1 and adj.1". Oxford English Dictionary online. Oxford: Oxford University Press. 2013. Retrieved 2013-09-30.(subscription required)</ref> based on Arabic {{lang|ar|نارنج}} ({{transliteration|ar|nāranj}}), borrowed from [[Persian Language|Persian]] {{lang|fa|نارنگ}} ({{transliteration|fa|nārang}}), derived from [[Sanskrit]] {{lang|sa|नारङ्ग}} ({{transliteration|sa|nāraṅga}}), which in turn derives from a [[Dravidian languages|Dravidian]] root word (compare {{lang|ta|நரந்தம்}}/{{lang|ml|നാരങ്ങ}} {{transliteration|ta|nārandam}}''/''{{transliteration|ml|nārañja}} which refers to [[bitter orange]] in [[Tamil language|Tamil]] and [[Malayalam]]).<ref>''Shorter Oxford English Dictionary'', 5th edition, 2002.</ref> The earliest known recorded use of ''orange'' as a colour name in English was in 1502, in a description of clothing purchased for [[Margaret Tudor]].<ref name="StClair">{{Cite book|title=The Secret Lives of Colour|last=St. Clair|first=Kassia|publisher=John Murray|year=2016|isbn=9781473630819|location=London|pages=88|oclc=936144129}}</ref><ref>{{Cite book|url=https://books.google.com/books?id=Sv2NRSdP58kC&q=elephant's+breath+and+london+smoke|title=Elephant's Breath & London Smoke: Historical Colour Names, Definitions & Uses|last=Salisbury|first=Deb|date=2009|publisher=Five Rivers Chapmanry|isbn=9780973927825|pages=148|language=en}}</ref> Another early recorded use was in 1512,<ref>{{cite web|title=orange colour – orange color, n. (and adj.)|url=https://www.oed.com/Entry/132168|website=Oxford English Dictionary|publisher=OED|access-date=19 April 2011}}</ref><ref>{{Cite book|last=Maerz |first=Aloys John |author2=Morris Rea Paul |title=A Dictionary of Color |location=New York |publisher=McGraw-Hill |year=1930 |page=200}}</ref> in a [[Will (law)|will]] now filed with the [[Public Record Office]]. By the 17th century, the fruit and its colour were familiar enough that 'orange-coloured' shifted in use to 'orange' as an adjective.<ref name="Morton2011"/> The place name "[[Orange, Vaucluse|Orange]]" has a separate [[Orange (word)#Etymology|etymology]] and is not related to that of the colour.<ref>{{cite book |title=A Dictionary of the Roman Empire |last=Bunson |first=Matthew |year=1995 |publisher=Oxford University Press |location=Oxford and New York |isbn=0-19-510233-9 |page=23}}</ref>

Before this word was introduced to the English-speaking world, ''[[History of saffron#Etymology|saffron]]'' already existed in the English language.<ref>{{cite web|url=http://dictionary.reference.com/browse/saffron|title=Saffron - Define Saffron at Dictionary.com|website=Dictionary.com|access-date=25 September 2014}}</ref> ''Crog'' also referred to the saffron colour, so that orange was also referred to as {{Lang|ang|ġeolurēad}} (''yellow-red'') for reddish orange, or {{Lang|ang|ġeolucrog}} (''yellow-saffron'') for yellowish orange.<ref>{{cite book |title=Symbols and their hidden meanings |last=Kenner |first=T.A. |year=2006 |publisher=Thunders Mouth |location=New York |isbn=978-1-56025-949-7 |page=11}}</ref><ref>{{cite book|url=https://books.google.com/books?id=r2XJZIyLo10C&q=saffron&pg=PA142|title=The Semantics of Colour|access-date=25 September 2014|isbn=9780521899925|last1=Biggam|first1=C. P|last2=Biggam|first2=Carole Patricia|date=2012-03-29|publisher=Cambridge University Press }}</ref><ref>{{cite book|url=https://books.google.com/books?id=RfxcbpXhCZoC&q=orange+colour+in+old+english&pg=PA11|title=The Power of Words|access-date=25 September 2014|isbn=978-9042021211|last1=Caie|first1=Graham D|last2=Hough|first2=Carole|last3=Wotherspoon|first3=Irené|year=2006|publisher=Rodopi }}</ref> Alternatively, orange things were sometimes described as red (which then had a broader meaning)<ref name="Morton2011"/> such as [[red deer]], [[red hair]], [[Mars|the Red Planet]] and [[European robin|robin redbreast]]. When orange was infrequently used in [[heraldry]], it was referred to as ''tawny'' or ''brusk''.<ref name="Morton2011"/>

==History and art==
In [[ancient Egypt]], and [[ancient India]], artists used an orange colour on some of their items. In Egypt, a mineral pigment called [[realgar]] was used for tomb paintings, as well as for other purposes. Orange [[carnelian]]s were significantly used during the [[Indus Valley Civilisation]] which was, in turn, obtained by the people of [[Kutch]], [[Gujarat]], India.<ref>{{cite book|title=Ancient Cities of the Indus Valley Civilization|page=96|publisher=Oxford University Press|year=1998|author=Jonathan Mark Kenoyer|author-link=Jonathan Mark Kenoyer}}</ref> The colour was also used later by medieval artists for the colouring of manuscripts. Pigments were also made in ancient times from a mineral known as [[orpiment]]. Orpiment was an important item of trade in the [[Roman Empire]] and was used as a medicine in [[ancient China]] although it contains [[arsenic]] and is highly toxic. It was also used as a fly poison and to poison arrows. Because of its yellow-orange colour, it was also a favourite with alchemists who were searching for a way to make gold, both in China and in the West.

Before the late 15th century, the colour orange existed in Europe, but without the name; it was simply called yellow-red. Portuguese merchants brought the first orange trees to Europe from Asia in the late 15th and early 16th century, along with the Sanskrit word {{Lang|sa|nāraṅga}}, which gradually became part of several [[European languages]]: {{Lang|es|naranja}} in Spanish, {{Lang|pt|laranja}} in Portuguese, and ''orange'' in English & French. In mid-16th century England, the colour referred to as 'orange' was a reddish-brown, matching the deteriorated appearance of the fruit after a long journey from where it was grown in Portugal or |Spain Improvements in transportation and the introduction of an orange grove in [[Surrey]] allowed the fresh fruit to become more familiar in England, and the colour referred to as ''orange'' shifted in the 17th century toward its modern understanding.<ref name="Morton2011">{{cite journal|title=Hue and Eye|first=Mark |last=Morton
|journal=Gastronomica|volume=11|number=3|date=Fall 2011|pages=6–7|publisher=[[University of California Press]]|doi=10.1525/gfc.2011.11.3.6 |jstor=10.1525/gfc.2011.11.3.6}}</ref>

<gallery mode="packed" heights="150px">
File:Egypt lyre 001.jpg|People in ancient Egyptian wall paintings often were shown with orange or yellow-orange skin, painted with a pigment called [[realgar]].
File:Orpiment-d06-185b.jpg|The mineral [[orpiment]] was a source of yellow and orange pigments in [[ancient Rome]], though it contained [[arsenic]] and was highly toxic.
File:Vladimirskaya ikona.jpg|[[Icon]], 12th century
</gallery>

===House of Orange===
The [[House of Orange-Nassau]] was one of the most influential royal houses in Europe in the 16th and 17th centuries. It originated in 1163 in the tiny [[Principality of Orange]], a feudal state of {{convert|108|sqmi}} north of [[Avignon]] in southern France. The Principality of Orange took its name not from the fruit, but from a Roman-Celtic settlement on the site which was founded in 36 or 35 BC and was named after the Celtic water god [[Arausio (god)|Arausio]];<ref>{{cite book |title=A Dictionary of the Roman Empire |last=Bunson |first=Matthew |year=1995 |publisher=Oxford University Press |location=Oxford and New York |isbn=978-0-19-510233-8 |page=23 }}</ref> however, the name may have been slightly altered, and the town associated with the colour, because it was on the route by which quantities of oranges were brought from southern ports such as [[Marseille]] to northern France.

The family of the Prince of Orange eventually adopted the name and the colour orange in the 1570s.<ref name="Grovier">{{Cite web|url=http://www.bbc.com/culture/story/20180227-the-toxic-colour-that-comes-from-volcanoes|title=The toxic colour that comes from volcanoes|last=Grovier|first=Kelly|language=en|access-date=2018-08-14}}</ref> The colour came to be associated with Protestantism, due to participation by the House of Orange on the Protestant side in the [[French Wars of Religion]]. One member of the house, [[William I of Orange]], organised the [[Eighty Years' War]] comprising resistance against Spain, a war that lasted eighty years, until the Netherlands won its independence. The House's arguably most prominent member, [[William III of Orange]], became [[King of England]] in 1689, after the downfall of the Catholic [[James II of England|James II]] in the [[Glorious Revolution]].

Due to [[William III of the Netherlands|William III]], orange became an important political colour in Britain and Europe. William was a Protestant, and as such, he defended the [[Protestantism in Ireland|Protestant minority of Ireland]] against the majority [[Roman Catholic]] population. As a result, the Protestants of Ireland were known as [[Orange Order|Orangemen]]. Orange eventually became one of the colours of the [[Irish flag]], symbolising the Protestant heritage. His orange-white-and-blue rebel flag became the forerunner of The Netherlands' modern flag.<ref name="Grovier"/>

When the [[Boers|Dutch settlers]] living in the [[Cape Colony]] (now part of [[South Africa]]) [[Great Trek|migrated into the Southern African heartlands]] in the 19th century, they founded what they called the [[Orange Free State]]. In the [[United States]], the flag of [[New York City]] has an orange stripe, to remember the Dutch colonists who founded the city. William of Orange is also remembered as the founder of the [[College of William & Mary]], and [[Nassau County, New York]] is named after the House of Orange-Nassau.

<gallery mode="packed" heights="100px">
File:King William III of England, (1650-1702).jpg|[[William III of Orange]], ruler of both England and the Netherlands
File:Flag of the Orange Free State.svg|The [[Orange Free State]] in [[South Africa]] was an independent [[Boer republic]] in the late 19th century, then a British colony, then part of the [[Union of South Africa]]. The orange colour came from the [[Orange River]], named for the Dutch [[House of Orange]]. The Dutch flag is in the canton.
File:Flag of South Africa 1928-1994.svg|The [[Flag of South Africa (1928–1994)|flag of South Africa]] (1928–1994) had an orange stripe, due to the influence of [[House of Orange]] and the period when there was a Dutch colony.
File:Flag of New York City.svg|The modern [[flag of New York City]] takes its colours from the Dutch flag of the 17th century, and has an orange stripe in honour of the House of Orange-Nassau.
File:Queensday 2011 Amsterdam 12.jpg|Celebrating [[Queensday]] in [[Amsterdam]]. The royal family of the [[Netherlands]] belong to the [[House of Orange]].
</gallery>

===18th and 19th century===
In the 18th century, orange was sometimes used to depict the robes of [[Pomona (mythology)|Pomona]], the goddess of fruitful abundance; her name came from the {{Lang|la|pomon}}, the Latin word for fruit. Oranges themselves became more common in northern Europe, thanks to the 17th-century invention of the heated greenhouse, a building type which became known as an [[orangerie]]. The French artist [[Jean-Honoré Fragonard]] depicted an allegorical figure of inspiration dressed in orange.

In 1797 a French scientist [[Louis Vauquelin]] discovered the mineral [[crocoite]], or [[lead chromate]], which led in 1809 to the invention of the synthetic pigment [[chrome orange]]. Other synthetic pigments, [[cobalt red]], [[cobalt yellow]], and cobalt orange, the last made from [[cadmium sulfide]] plus [[cadmium selenide]], soon followed. These new pigments, plus the invention of the [[metal paint tube]] in 1841, made it possible for artists to paint outdoors and to capture the colours of natural light.

In Britain, orange became highly popular with the [[Pre-Raphaelite Brotherhood|Pre-Raphaelites]] and with history painters. The flowing red-orange hair of [[Elizabeth Siddal]], a prolific model and the wife of painter [[Dante Gabriel Rossetti]], became a symbol of the [[Pre-Raphaelite Brotherhood|Pre-Raphaelite movement]]. [[Frederic Leighton, 1st Baron Leighton|Lord Leighton]], the president of the Royal Academy, produced ''[[Flaming June]]'', a painting of a sleeping young woman in a bright orange dress, which won wide acclaim. [[Albert Joseph Moore]] painted festive scenes of [[Roman people|Romans]] wearing orange cloaks brighter than any of the Romans ever likely wore. In the United States, [[Winslow Homer]] brightened his palette with vivid oranges.

In France, painters took orange in an entirely different direction. In 1872 [[Claude Monet]] painted ''[[Impression, Sunrise]]'', a tiny orange sun and some orange light reflected on the clouds and water in the centre of a hazy blue landscape. This painting gave its name to the [[Impressionist]] movement.

Orange became an important colour for all the Impressionist painters. They all had studied the recent books on colour theory, and they know that orange placed next to azure blue made both colours much brighter. [[Auguste Renoir]] painted boats with stripes of chrome orange paint straight from the tube. [[Paul Cézanne]] did not use orange pigment, but produced his own oranges with touches of yellow, red and ochre against a blue background. [[Toulouse-Lautrec]] often used oranges in the skirts of dancers and gowns of Parisiennes in the cafes and clubs he portrayed. For him, it was the colour of festivity and amusement.

The Post-Impressionists went even further with orange. [[Paul Gauguin]] used oranges as backgrounds, for clothing and skin colour, to fill his pictures with light and exoticism. But no other painter used orange so often and dramatically as [[Vincent van Gogh]]. who had shared a house with Gauguin in [[Arles]] for a time. For Van Gogh orange and yellow were the pure sunlight of Provence. He produced his own oranges with mixtures of yellow, ochre and red, and placed them next to slashes of sienna red and bottle green, and below a sky of turbulent blue and violet. He put an orange moon and stars in a cobalt blue sky. He wrote to his brother Theo of searching for oppositions of blue with orange, of red with green, of yellow with violet, searching for broken colours and neutral colours to harmonize the brutality of extremes, trying to make the colours intense, and not a harmony of greys.<ref>Vincent van Gogh, ''Lettres a Theo'', p. 184.</ref>

<gallery mode="packed" heights="150px">
File:Queen Anne of Great Britain.jpg|Queen [[Anne, Queen of Great Britain|Anne of Great Britain]] in orange gown (1736)
File:Jean-Honoré Fragonard - Inspiration.jpg|''Inspiration'', by [[Jean-Honoré Fragonard]] (1789)
File:Jean-François Badoureau - D. Pedro de Alcântara, Príncipe Real.jpg|Pedro de Alcântara, Prince Royal (later Emperor of Brazil as [[Pedro I of Brazil|Pedro I]] and King of Portugal as Pedro IV; early 1800s)
File:Moore Albert Midsummer.jpg|''Midsummer'', by [[Albert Joseph Moore]] (1848–1893)
File:Dante Gabriel Rossetti - Regina Cordium (1860).jpg|The flowing red-orange hair of [[Elizabeth Siddal]], model and wife of painter [[Dante Gabriel Rossetti]], became a symbol of the [[Pre-Raphaelite Brotherhood|Pre-Raphaelite]] movement (1860).
File:Claude Monet, Impression, soleil levant.jpg|''[[Impression, Sunrise]]'' by [[Claude Monet]] (1872) featured a tiny but vivid chrome orange Sun. The painting gave its name to the Impressionist movement.
File:Pedro Américo - D. Pedro II na abertura da Assembléia Geral (cropped).jpg|Emperor [[Pedro II of Brazil]] wearing a wide collar of orange toucan feathers around his shoulders and elements of the [[Imperial Regalia of Brazil|Imperial Regalia]]. Detail from a painting by [[Pedro Américo]] (1872)
File:1877-winslow-homer-the-new-novel.jpg|''The new novel'', by [[Winslow Homer]] (1877)
File:Chatou hires.jpg|''Oarsmen at Chatou'' by [[Pierre-Auguste Renoir]] (1879). Renoir knew that orange and blue brightened each other when put side by side.
File:Paul Gauguin 112.jpg|''Self-portrait'' of [[Paul Gauguin]] (1888)
File:Van Gogh - Weiden bei Sonnenuntergang.jpeg|''Willow trees at sunset'' by Arles van Gogh (1888)
File:VanGogh-starry night ballance1.jpg|''[[The Starry Night]]'' by [[Vincent van Gogh]], features orange stars, an orange [[Venus]], and an orange [[Moon]] (1889)
File:Monet grainstacks W1273.jpg|''Meules'', from the 1890–1891 series of ''[[Haystacks (Monet)|Haystacks]]'' by [[Claude Monet]]
File:Henri de Toulouse-Lautrec 031.jpg|[[Henri de Toulouse-Lautrec]] was extremely fond of orange, the colour of amusement ''[[Jane Avril]]'' (1893–1896).
File:Flaming June, by Frederic Lord Leighton (1830-1896).jpg|''[[Flaming June]]'', by [[Frederic Leighton, 1st Baron Leighton|Lord Leighton]] (1895)
File:Paul Gauguin 135.jpg|''[[Vairumati]]'', by Paul Gauguin (1897)
</gallery>

===20th and 21st centuries===
In the 20th and 21st centuries, the colour orange had highly varied associations, both positive and negative.

The high visibility of orange made it a popular colour for certain kinds of clothing and equipment. During [[World War II]], US Navy pilots in the Pacific began to wear orange inflatable life jackets, which could be spotted by search and rescue planes. After the war, these jackets became common on both civilian and naval vessels of all sizes, and on aircraft flown over water. Orange is also widely worn (to avoid being hit) by workers on highways and by cyclists.

A [[herbicide]] called [[Agent Orange]] was widely sprayed from aircraft by the [[Royal Air Force]] during the [[Malayan Emergency]] and the [[US Air Force]] during the [[Vietnam War]] to remove the forest and jungle cover beneath which enemy combatants were believed to be hiding, and to expose their supply routes. The chemical was not actually orange, but took its name from the colour of the steel drums in which it was stored. Agent Orange was toxic, and was later linked to birth defects and other health problems.

<gallery mode="packed" heights="150px">
File:John Thach.jpg|A [[United States naval aviator|US Navy pilot]] during World War II wearing an orange inflatable life jacket.
File:ISS Expedition 5 crew.jpg|Crew members of the [[International Space Station]].
File:US-Huey-helicopter-spraying-Agent-Orange-in-Vietnam.jpg|A US [[helicopter]] spraying [[Agent Orange]] on a jungle during the [[Vietnam War]],
File:MOWAG Feuerwehrvan.JPG|[[Firefighter]] car in Switzerland
File:Eesti mailbox.JPG|Orange [[Post box|mailbox]], [[Estonia]]
</gallery>

Orange also had and continues to have a political dimension. Orange serves as the colour of [[Christian democratic]] political ideology, which is based on [[Catholic social teaching]] and [[Neo-Calvinist]] theology; Christian democratic political parties came to prominence in Europe and the Americas after World War II.<ref name="Witte1993">{{cite book|last=Witte|first=John|title=Christianity and Democracy in Global Context|year=1993|publisher=Westview Press|language=en |isbn=9780813318431|page=9}}</ref><ref name="Reuchamps2014">{{cite book|last=Reuchamps|first=Min|title=Minority Nations in Multinational Federations: A Comparative Study of Quebec and Wallonia|date=17 December 2014|publisher=Routledge|language=en|isbn=9781317634720|page=140}}</ref>
<gallery mode="packed" heights="100">
File:Fidesz 2015.svg|Logo of the [[Fidesz]]
File:Logo of the Christian Democratic and Flemish (2022).svg|Logo of the [[Christen-Democratisch en Vlaams]]
File:Logo-CVP.svg|Logo of the [[Christian Democratic People's Party of Switzerland]]
File:Logo unio 2015.png|Logo of the [[Democratic Union of Catalonia]]
File:People's National Party (Jamaica) logo.png|The logo of the [[People's National Party (Jamaica)|People's National Party of Jamaica]]
</gallery>

In Ukraine in November–December 2004, it became the colour of the [[Orange Revolution]], a popular movement which carried activist and reformer [[Viktor Yushchenko]] into the presidency.<ref>[https://books.google.com/books?id=B0RdPe1hHccC&dq=The+orange+color+Viktor+Yushchenko&pg=PA331 Foreign Policy: Theories, Actors, Cases Foreign Policy: Theories, Actors, Cases], [[Oxford University Press]], 2008, {{ISBN|0199215294}} (page 331)</ref> In parts of the world, especially [[Northern Ireland]], the colour is associated with the [[Orange Order]], a [[Protestant]] fraternal organisation and relatedly, Orangemen, marches and other social and political activities, with the colour orange being associated with Protestantism similar to the Netherlands.

<gallery mode="packed" heights="150px">
File:Flag of the Orange Order.svg|Flag of the [[Orange Order]], an international Protestant fraternal organisation
File:Stamp of Ukraine s635.jpg|A 2005 postage stamp of [[Ukraine]] commemorated the [[Orange Revolution]] of 2004.
</gallery>

==Science==
===Optics===
[[File:Kleurenovergang van rood naar geel.png|thumb|centre|300px|In traditional [[colour theory]], orange is a range of colours between red and yellow]]
In [[optics]], orange is the colour seen by the eye when looking at light with a wavelength between approximately 585–620{{nbsp}}[[nanometre|nm]]. It has a [[hue]] of 30° in [[HSL and HSV|HSV colour space]]. Isaac Newton's ''[[Opticks]]'' distinguished between pure orange light and mixtures of red and yellow light by noting that mixtures could be separated using a prism.<ref>Isaac Newton, [https://archive.org/details/opticksoratreat00newtgoog/page/n134/mode/2up Opticks: or, A Treatise of the Reflexions, Refractions, Inflexions and Colours of Light], Book I, Prop IV, Theor III</ref>

In the traditional colour wheel used by painters, orange is the range of colours between red and yellow, and painters can obtain orange simply by mixing red and yellow in various proportions; however these colours are never as vivid as a pure orange pigment. In the [[RGB colour model]] (the system used to display colours on a television or computer screen), orange is generated by combining high intensity red light with a lower intensity green light, with the blue light turned off entirely. Orange is a [[tertiary colour]] which is numerically halfway between [[gamma correction|gamma-compressed]] red and yellow, as can be seen in the [[:File:RBG color wheel.svg|RGB colour wheel]].

Regarding painting, blue is the complementary colour to orange. As many painters of the 19th century discovered, blue and orange reinforce each other. The painter Vincent van Gogh wrote to his brother Theo that in his paintings, he was trying to reveal "the oppositions of blue with orange, of red with green, of yellow with violet{{nbsp}}... trying to make the colours intense and not a harmony of grey".<ref>''Correspondance'' of Vincent van Gogh, No. 459A, cited in John Gage, ''Couleur et Culture: Usages et significations de la couleur de l'Antiquité à l'abstraction''.</ref> In another letter he wrote simply, "There is no orange without blue."<ref>Eva Heller, ''Psychologie de la couleur: effets et symboliques'', p. 152.</ref> Van Gogh, [[Pierre-Auguste Renoir]] and many other [[Impressionist]] and [[Post-Impressionist]] painters frequently placed orange against azure or cobalt blue, to make both colours appear brighter.

The actual complement of orange is [[azure (color)|azure]] – a colour that is one quarter of the way between blue and green on the colour spectrum. The actual complementary colour of true blue is yellow. Orange pigments are largely in the [[ochre]] or [[Cadmium pigments|cadmium]] families, and absorb mostly greenish-blue light.

===Pigments and dyes===
<gallery mode="packed" heights="150px">
File:Orpiment mineral.jpg|A sample of [[orpiment]] from an arsenic mine in [[southern Russia]]. Orpiment has been used to make orange pigment since ancient times in ancient Egypt, Europe and China. Romans used the mineral for trade.
File:Realgar09.jpg|[[Realgar]], an arsenic sulfide mineral 1.5-2.5 Mohs hardness, is highly toxic. It was used since ancient times until the 19th century to make red-orange pigment, as a poison, and a medicine.
File:Crocoite from the Dundas extended mine, Dundas, Tasmania, Australia.jpg|A sample of [[crocoite]] crystals from [[Dundas, Tasmania|Dundas]] extended mine in [[Tasmania]]. Discovered in 1797 by the French chemist [[Louis Vauquelin]], it was used to make the first synthetic orange pigment, [[chrome orange]], used by [[Pierre-Auguste Renoir]] and other painters.
File:Safran-Weinviertel Niederreiter 2 Gramm 8285.jpg|[[Saffron]], made from the hand-picked [[stigma (botany)|stigma]]s of the ''[[Crocus sativus]]'' flower, is used both as a dye and as a spice.
File:Curcuma longa (Haldi) W IMG 2440.jpg|The [[Curcuma longa]] plant is used to make [[turmeric]], a common and less expensive substitute for saffron as a dye and colour.
File:Curcuma longa roots.jpg|[[Turmeric|Turmeric powder]], first used as a dye, and later as a medicine and spice in [[Indian cuisine]].
</gallery>

Other orange pigments include:
*[[Minium (pigment)|Minium]] and [[massicot]] are bright yellow and orange pigments made since ancient times by heating lead oxide and its variants. Minium was used in the [[Byzantine Empire]] for making the red-orange colour on illuminated manuscripts, while massicot was used by ancient Egyptian scribes and in the Middle Ages. Both substances are toxic, and were replaced in the beginning of the 20th century by chrome orange and cadmium orange.<ref>Isabelle Roelofs and Fabien Petillion, ''La couleur expliquée aux artistes'', pp. 46–47.</ref>
*[[Cadmium orange]] is a synthetic pigment made from [[cadmium sulfide|cadmium sulphide]]. It is a by-product of mining for [[zinc]], but also occurs rarely in nature in the mineral [[greenockite]]. It is usually made by replacing some of the [[sulfur|sulphur]] with [[selenium]], which results in an expensive but deep and lasting colour. [[Selenium]] was discovered in 1817, but the pigment was not made commercially until 1910.<ref>Isabelle Roelofs and Fabien Petillion, ''La couleur expliquée aux artistes'', p. 121.</ref>
*[[Quinacridone]] orange is a synthetic organic pigment first identified in 1896 and manufactured in 1935. It makes a vivid and solid orange.
*[[Diketopyrrolopyrrole dye|Diketopyrrolopyrrole orange]] or DPP orange is a synthetic organic pigment first commercialised in 1986. It is sold under various commercial names, such as translucent orange. It makes an extremely bright and lasting orange, and is widely used to colour plastics and fibres, as well as in paints.<ref>Isabelle Roelofs and Fabien Petillion, ''La couleur expliquée aux artistes'', pp. 66–67</ref>

===Orange natural objects===
The orange colour of [[carrot]]s, [[pumpkin]]s, [[sweet potato]]es, [[Orange (fruit)|oranges]], and many other fruits and vegetables comes from [[carotene]]s, a type of [[photosynthetic pigment]]. These pigments convert the light energy that the plants absorb from the sun into chemical energy for the plants' growth. The carotenes themselves take their name from the carrot.<ref>{{cite web|url=https://www.britannica.com/EBchecked/topic/96623/carotenoid|title=carotenoid|website=Encyclopædia Britannica|access-date=25 September 2014}}</ref> [[Autumn leaf color|Autumn leaves]] also get their orange colour from carotenes. When the weather turns cold and production of green [[chlorophyll]] stops, the orange colour remains.

Before the 18th century, carrots from Asia were usually purple, while those in Europe were either white or red. Dutch farmers bred a variety that was orange; according to some sources, as a tribute to the [[stadtholder]] of [[Holland]] and [[Zeeland]], [[William the Silent|William of Orange]].<ref>{{cite news|url=https://www.washingtonpost.com/blogs/wonkblog/post/carrots-are-orange-for-an-entirely-political-reason/2011/09/09/gIQAfayiFK_blog.html|title=Are carrots orange for political reasons?|newspaper=Washington Post|access-date=25 September 2014}}</ref> The long orange Dutch carrot, first described in 1721, is the ancestor of the orange horn carrot, one of the most common types found in supermarkets today. It takes its name from the town of [[Hoorn]], in the Netherlands.

<gallery mode="packed" heights="150">
File:CarrotDiversityLg.jpg|Carrots, pumpkins and other vegetables get their orange colour from [[carotene]]s, a variety of [[photosynthetic pigment]], which takes its own name from the carrot.
File:Japanese maple.jpg|A [[Japanese maple]] tree in autumn. [[Autumn leaf color|Autumn leaves]] also get their orange colour from carotenes.
File:Traugers-farm-bucks-county-large.jpg|[[Pumpkins]]
File:CarrotRoots.jpg|[[Carrot]]s
File:5aday sweet potato.jpg|[[Sweet potato]]es
File:Orange-Fruit-Pieces.jpg|[[Orange (fruit)|Oranges]]
File:Mandarin Oranges (Citrus Reticulata).jpg|[[Mandarin orange|Mandarins]]
</gallery>

===Flowers===
Orange is traditionally associated with the [[autumn]] season, with the harvest and autumn leaves. The flowers, like orange fruits and vegetables and autumn leaves, get their colour from the photosynthetic pigments called [[carotene]]s.
<gallery mode="packed" heights="150">
File:California Poppies1.jpg|A field of [[Eschscholzia californica|California poppies]]
File:Calendula officinalis 0.0 R.jpg|The [[Pot marigold|marigold]] flower, or ''[[Calendula]]''
File:- Flower 19 -.jpg|Poppy flower
File:Daylily (Hemerocallis fulva) v2.jpg|Daylily (''Hemerocallis fulva'')
File:Begonia 'On Top Sunset Shades' 01.JPG|Begonia cultivar
File:Sylvia Ball-Dahlie.JPG|The [[dahlia]]
File:Orange Rose1.jpg|An orange [[rose]]
File:Orange hibiscus.jpg|alt=Orange hibiscus|Orange [[hibiscus]]
File:Butterfly Weed Asclepias tuberosa Buds.jpg|buds of the butterfly weed, or ''[[Asclepias tuberosa]]''
File:Hieracium aurantiacum LC0106.jpg|''[[Hieracium aurantiacum]]'', or orange hawkweed
File:Heliconia psittacorum 01.JPG|''[[Heliconia psittacorum]]'', or parrot's flower, is a perennial herb native to the Caribbean and northern South America.
File:Fritillaria imperialis 01.JPG|''[[Fritillaria imperialis]]''
File:Yellow French Marigold Flower.jpg|''[[Tagetes erecta]]'' (marigold)
File:Vanda garayi.png|''[[Vanda garayi]]''
</gallery>

===Animals===
<gallery mode="packed" heights="150px">
File:Canario paxaro.jpg|[[Canary bird]]
File:Panthera tigris tigris.jpg|A [[Bengal tiger]] (''Panthera tigris tigris'')
File:Red Squirrel - Lazienki.JPG|A [[red squirrel]] is actually orange.
File:Vulpes vulpes laying in snow.jpg|A [[red fox]], or ''Vulpes vulpes'', in the snow.
File:Iguana iguana (orange male).jpg|An [[iguana]]
File:A couple of Tadorna ferruginea.2.jpg|The ''[[Tadorna ferruginea]]'', or ruddy shelduck, lives in Southeast Europe, Central Asia and Southeast Asia, and migrates in the winter to India.
File:Flamingo National Zoo.jpg|An orange [[flamingo]] in the [[National Zoological Park (United States)|National Zoo]] in Washington, D.C.
File:Altamira Oriole icterus gularis, Bentsen State Park TX.jpg|An [[Altamira oriole]] in Bentsen State Park, Texas.
File:Flame angelfish (Centropyge loricula).jpg|A [[flame angelfish]], or ''Centropyge loricula''
File:Auftauchender Koi 2011.JPG|A [[koi]], a domesticated [[carp]] bred in Japan for its ornamental value in gardens and ponds
File:Arion rufus (Dourbes).jpg|An ''[[Arion rufus]]'', or European red slug, lives in northern Europe, especially Denmark, and can be eighteen centimetres long.
</gallery>

===Foods===
Orange is a very common colour of fruits, vegetables, spices, and other foods in many different cultures. As a result, orange is the colour most often associated in western culture with taste and aroma.<ref>Eva Heller, ''Psychologie de la couleur: effets et symboliques'', p. 152</ref> Orange foods include peaches, [[apricot]]s, [[mangoes]], [[carrot]]s, [[shrimp]], [[salmon roe]], and many other foods. Orange colour is provided by [[spice]]s such as [[paprika]], [[saffron]] and [[curry powder]]. In the United States, with [[Halloween]] on 31 October, and in North America with [[Thanksgiving]] in October (Canada) and November (US) orange is associated with the harvest colour, and also is the colour of the carved pumpkins, or jack-o-lanterns, used to celebrate the holiday.

<gallery mode="packed" heights="120px">
File:Pumpkin-Pie-Whole-Slice.jpg|Orange-coloured [[pumpkin pie]] is the traditional dessert at a US [[Thanksgiving]] dinner.
File:Melon au vin muscat.jpg|A [[melon]] with [[Muscat (grape)|Muscat]] wine (France).
File:Mashedpumpkin.jpg|A bowl of [[mashed pumpkin]]
File:TzimmesS.jpg|Carrot [[tzimmes]]
File:Apricots real.jpg|[[Apricot]]s
File:Oronges.jpg|''[[Amanita caesarea]]'' known in English as Caesar's mushroom
File:Salmon Fish.JPG|[[Salmon]] steaks
File:Mangga gedong mango juice.JPG|[[Mango]] juice
File:Homemade marmalade, England.jpg|Homemade English [[marmalade]]
File:Khrenovina-sauce.jpg|[[Khrenovina sauce]], a traditional [[Siberia]]n sauce made of tomatoes, garlic and horseradish.
File:Paella valenciana.gif|[[Paella]] from [[Valencia]], Spain
File:Indian cuisine-Panipuri-05.jpg|[[Panipuri]], a popular street snack in the Indian subcontinent
File:Curry Ist.jpg|[[Curry powder]] from the Indian subcontinent
File:Spanishsmokedpaprika.jpg|[[Paprika]] from Spain
</gallery>

===Food colourings===
[[File:Doritos.jpg|thumb|upright|Nacho cheese [[Doritos]], like many popular snack foods, contain [[Yellow 6]], [[Yellow 5]] and [[Red 40]] synthetic food colour.]]
[[File:Single wrapped slice of processed cheese.jpg|thumb|upright|Wrapped slices of [[American cheese]] are now often coloured with [[annatto]], a natural food colour made from the seeds of the [[achiote]] tree.]]

People associate certain colours with certain [[Flavor (taste)|flavours]], and the colour of food can influence the perceived flavour in anything from [[confectionery|candy]] to [[wine]].<ref>{{cite journal |author=Jeannine Delwiche |title=The impact of perceptual interactions on perceived flavor |journal=Food Quality and Preference |year=2003 |volume=14 |issue=2 |pages=137–146 |doi=10.1016/S0950-3293(03)00041-7 |url=http://www-fst.ag.ohio-state.edu/Pubs/2004/delwiche-fqap1.pdf |url-status=dead |archive-url=https://web.archive.org/web/20130228041745/http://www-fst.ag.ohio-state.edu/Pubs/2004/delwiche-fqap1.pdf |archive-date=2013-02-28 |citeseerx=10.1.1.103.7087 }}</ref> Since orange is popularly associated with good flavour, many companies add orange [[food colouring]] to improve the appearance of their packaged foods. Orange pigments and dyes, synthetic or natural, are added to many orange sodas and juices, cheeses (particularly [[cheddar cheese]], [[Gloucester cheese]], and [[American cheese]]); snack foods, butter and margarine; breakfast cereals, ice cream, [[yoghurt]], jam and candy. It is also often added to children's medicine, and to [[chicken feed]] to make the [[egg yolk]]s more orange.

The United States Government and the [[European Union]] certify a small number of synthetic chemical colourings to be used in food. These are usually [[aromatic hydrocarbon]]s, or [[azo dyes]], made from petroleum. The most common ones are:
*[[Allura red AC]], also known as Red 40 and [[E number|E129]].
*[[Sunset Yellow FCF]], also known as Yellow 6 and [[E number|E110]].
*[[Tartrazine]], also known as Yellow 5 and [[E number|E102]]. A dye used in soft drinks such as [[Mountain Dew]], [[Kool-Aid]], chewing gum, popcorn, breakfast cereals, cosmetics, shampoos, eyeshadow, blush, and lipstick.
*[[Orange B]] is approved by the US [[Food and Drug Administration]], but only for hot dog and sausage casings.
*[[Citrus Red 2]] is certified only to colour orange peels.
Because many consumers are worried about possible health consequences of synthetic dyes, some companies are beginning to use natural food colours. Since these food colours are natural, they do not require any certification from the Food and Drug Administration. The most popular natural food colours are:
*[[Annatto]], made from the seeds of the [[achiote]] tree. Annatto contains [[carotenoid]]s, the same ingredient that gives carrots and other vegetables their orange colour. Annatto has been used to dye certain cheeses in Britain, particularly [[Gloucester cheese]], since the 16th century. It is now commonly used to colour American cheese, snack foods, breakfast cereal, butter, and margarine. It is used as a body paint by native populations in Central and South America. In India, women often put it, under the name ''[[sindoor|sindūra]]'', on their hairline to indicate that they are married.
*[[Turmeric]] is a common spice in the Indian subcontinent, Persia and the Mideast. It contains the pigments called [[curcuminoid]]s, widely used as a dye for the robes of Buddhist monks. It is also often used in curry powders and to give flavour to [[mustard (condiment)|mustard]]. It is now being used more frequently in Europe and the US to give an orange colour to canned beverages, ice cream, yogurt, popcorn and breakfast cereal. The food colour is usually listed as E100.
*[[Paprika oleoresin]] contains natural carotenoids, and is made from [[chili pepper]]s. It is used to colour cheese, orange juice, spice mixtures and packaged sauces. It is also fed to chickens to make their [[egg yolk]]s more orange.

==Culture, associations and symbolism==
<!-- "Color orange in culture" redirects here -->

===Confucianism===
{{Disputed section|date=September 2024}}
In Confucianism, the religion and philosophy of ancient China, orange was the colour of transformation. In China and India, the colour took its name not from the orange fruit, but from saffron, the finest and most expensive dye in Asia. According to Confucianism, existence was governed by the interaction of the male active principle, the ''yang'', and the female passive principle, the ''yin''. Yellow was the colour of perfection and nobility; red was the colour of happiness and power. Yellow and red were compared to light and fire, spirituality and sensuality, seemingly opposite but really complementary. Out of the interaction between the two came orange, the colour of transformation.<ref>Eva Heller, ''Psychologie de la couleur: effets et symboliques'', pp. 155–56.</ref>

===Hinduism and Buddhism===
A wide variety of colours, ranging from a slightly orange yellow to a deep orange red, all simply called [[saffron]], are closely associated with Hinduism and Buddhism, and are commonly worn by monks and holy men across Asia.

In Hinduism, the divinity [[Krishna]] is commonly portrayed dressed in yellow or yellow orange. Yellow and saffron are also the colours worn by [[sadhu]], or wandering pious men in India.

In Buddhism, orange (or more precisely saffron) was the colour of illumination, the highest state of perfection.<ref>Eva Heller, ''Psychologie de la couleur: effets et symboliques'', pp. 158</ref> The saffron colours of robes to be worn by monks were defined by the Buddhist texts. The robe and its colour is a sign of renunciation of the outside world and commitment to the order. The candidate monk, with his master, first appears before the monks of the monastery in his own clothes, with his new robe under his arm and asks to enter the order. He then takes his vows, puts on the robes, and with his begging bowl, goes out to the world. Thereafter, he spends his mornings begging and his afternoons in contemplation and study, either in a forest, garden, or in the monastery.<ref name="Henri Arvon 1951 pg. 61-64">Henri Arvon (1951). ''Le bouddhisme'' (pp. 61–64)</ref>

According to Buddhist scriptures and commentaries, the robe dye is allowed to be obtained from six kinds of substances: roots and tubers, plants, bark, leaves, flowers and fruits. The robes should also be boiled in water for a long time to get the correctly sober colour. Saffron and ochre, usually made with dye from the [[curcuma longa]] plant or the heartwood of the [[jackfruit]] tree, are the most common colours. The so-called forest monks usually wear ochre robes and city monks saffron, though this is not an official rule.<ref>{{Cite web |title=The Buddhist World: The Monastic Robes. |url=http://www.buddhanet.net/e-learning/buddhistworld/robe_txt/ |access-date=2024-11-10 |website=buddhanet.net |language=en-US}}</ref>

The colour of robes also varies somewhat among the different ''vehicles'' (schools) of Buddhism, and by country, depending on their doctrines and the dyes available. The monks of the strict [[Vajrayana]], or [[Tantric Buddhism]], practised in Tibet, wear the most colourful robes of saffron and red. The monks of [[Mahayana Buddhism]], practised mainly in Japan, China and Korea, wear lighter yellow or saffron, often with white or black. Monks of [[Theravada Buddhism]], practised in Southeast Asia, usually wear ochre or saffron colour. Monks of the forest tradition in Thailand and other parts of Southeast Asia wear robes of a brownish ochre, dyed from the wood of the [[jackfruit]] tree.<ref name="Henri Arvon 1951 pg. 61-64"/><ref name="Anne Varichon 2000 pg. 62">Anne Varichon (2000), ''Couleurs: pigments et teintures dans les mains des peuples'', p. 62</ref>
<gallery mode="packed" heights="150px">
File:Child monk group.JPG|Young Thai Buddhist monks
File:Sadou Kathmandu 04 04.jpg|A Hindu sadhu, or ascetic wandering monk or pious man, in [[Kathmandu]], [[Nepal]]
File:Buddhist monks of Tibet7.jpg|Buddhist monks in [[Tibet]]
</gallery>

===Colour of amusement===
In Europe and America orange and yellow are the colours most associated with amusement, frivolity and entertainment. In this regard, orange is the exact opposite of its complementary colour, blue, the colour of calm and reflection. Mythological paintings traditionally showed [[Bacchus]] (known in [[Greek mythology]] as [[Dionysus]]), the god of wine, ritual madness and ecstasy, dressed in orange. Clowns have long worn orange wigs. [[Toulouse-Lautrec]] used a palette of yellow, black and orange in his posters of Paris cafes and theatres, and [[Henri Matisse]] used an orange, yellow and red palette in his painting, the ''Joy of Living''.<ref>Eva Heller, ''Psychologie de la couleur: effets et symboliques'', pp. 152–153.</ref> 
<gallery mode="packed" heights="150px">
File:Bacchus and Ariadne by Guido Reni.jpg|''[[Bacchus and Ariadne]]'' by [[Guido Reni]] (1620). Bacchus traditionally wears orange in mythological paintings.
File:Hendrick ter Brugghen (Dutch - Bacchante with an Ape - Google Art Project.jpg|A [[Bacchante]], a female follower of [[Bacchus]], by Hendrick ter Brugghen (1627).
File:Renoir clown.jpg|A clown by [[Pierre-Auguste Renoir]] (1868)
File:Colorful Clown 2.jpg|A contemporary clown.
File:Ludo or Tubby (8092141186).jpg|Tubby bear, a [[toy]]
</gallery>

===Colour of visibility and warning===
Orange is the colour most easily seen in dim light or against the water, making it, particularly the shade known as [[safety orange]], the colour of choice for life rafts, life jackets or [[buoys]]. Highway temporary signs about construction or detours in the United States are orange, because of its visibility and its association with danger.

It is worn by people wanting to be seen, including highway workers and lifeguards. Prisoners are also sometimes dressed in orange clothing to make them easier to see during an escape. Lifeguards on the beaches of [[Los Angeles County]], both real and in television series, wear orange swimsuits to make them stand out. Orange astronaut suits have the highest visibility in space, or against blue sea. An aircraft's two types of "black box", or [[flight data recorder]] and [[cockpit voice recorder]], are actually bright orange, so they can be found more easily. In some cars, [[Electrical connector|connectors]] related to safety systems, such as the airbag, may be coloured orange.

The [[Golden Gate Bridge]] at the entrance of [[San Francisco Bay]] is painted [[international orange]] to make it more visible in the fog. Next to red, it is the colour most popular for extroverts, and as a symbol of activity.<ref>Eva Heller, ''Psychologie de la couleur: effets et symboliques'', pp. 154–155</ref>

Orange is sometimes used, like red and yellow, as a colour warning of possible danger or calling for caution. A skull against an orange background means a toxic substance or poison.

In the colour system devised by the US [[Department of Homeland Security]] to measure the threat of terrorist attack, an orange level is second only to a red level. The US [[Manual on Uniform Traffic Control Devices]] specifies orange for use in temporary and construction signage.
{{Clear}}
<gallery mode="packed" heights="150px">
File:MUTCD M4-9L.svg|U.S. highway temporary sign.
File:Hsas-chart with header.svg|In the United States, orange indicates the second highest threat level of terrorist attack.
File:GoldenGateBridge-001.jpg|The [[Golden Gate Bridge]] is painted [[international orange]] to make it visible in the fog.
File:USCGC Eagle life preserver.JPG|An orange [[lifebuoy]] on the US Coast Guard ship ''Eagle''.
File:Contemporary orange-white striped prison uniform.JPG|[[Prison uniform]]s are often orange.
File:Grossi-7.png|The "black box" is actually bright orange.
File:Amber_traffic_signal,_Stamford_Road,_Singapore_-_20111210-01.jpg|Orange traffic light in [[Singapore]]
File:Naoko Yamazaki.jpg|Japanese scientist and astronaut [[Naoko Yamazaki]] worked aboard the US [[Space Shuttle]].
</gallery>

===Academia===
* In the United States and Canada, orange [[Academic dress|regalia]] is associated with the field of engineering.<ref name="SullivanTrimmingsGowns">{{cite web|last=Sullivan |first=Eugene |title=An Academic Costume Code and An Academic Ceremony Guide |website=American Council on Education |year=1997 |url=http://www.acenet.edu/AM/Template.cfm?Section=Search&template=/CM/HTMLDisplay.cfm&ContentID=10625 |access-date=2010-06-26 |url-status=dead |archive-url=https://web.archive.org/web/20061206113630/http://www.acenet.edu/AM/Template.cfm?Section=Search&template=%2FCM%2FHTMLDisplay.cfm&ContentID=10625 |archive-date=2006-12-06 }}</ref>
[[File:Caltech logo 2014.png|center|thumb|329x329px|The Logo of [[California Institute of Technology]] (Caltech)]]
* The [[Syracuse University]], [[Princeton University]], [[Occidental College]], [[St. John's College (Annapolis/Santa Fe)|St. John's College]], and [[University of Tennessee]] also uses orange as a main colour.<ref>{{cite book |title=Syracuse University Brand Guidelines |url=https://www.syracuse.edu/wp-content/uploads/syracuse-university-brand-guidelines.pdf |access-date=11 June 2021}}</ref>

===Selected flags===
[[File:Countries with orange on their flags.svg|thumb|upright=0.75|Countries with orange on their flags. The colour on the map corresponds to the tint of orange in the flag.]]
<gallery mode="packed" heights="100px">
File:Flag of Ireland.svg|alt=Flag of Ireland (1919) The orange represents King William III, or William of Orange, and the Protestant community in Ireland.|[[Flag of Ireland]] (1919). The orange represents [[William III of England|King William III]], or William of Orange, and the Protestant community in Ireland.<ref>[http://www.taoiseach.gov.ie/index.asp?locID=194&docID=242 National Flag], ''Taoiseach.gov.ie'', 2007. Retrieved on 11 June 2007.</ref>
File:Flag of India.svg|alt=Flag of India (1947). The top-most colour in the flag is officially called bhagwa, or saffron. (However, to some people, it is indistinguishable from orange.) It was originally chosen by Mohandas Gandhi, and originally stood for the Hindu community in India, then for the sacrifice of the people.|[[Flag of India]] (1947). The top-most colour in the flag is called ''bhagwa'' or officially, [[Saffron (color)|saffron]]. (However, to some people, it is indistinguishable from orange.) It was originally chosen by [[Mahatma Gandhi|Mohandas Karamchand Gandhi]], and originally stood for the Hindu community in India, then for the sacrifice of the people.<ref>{{Harvnb|Roy|2006|pp=503–505}}</ref>
File:Flag of Côte d'Ivoire.svg|[[Flag of Côte d'Ivoire]] (1959). The orange stands for the [[savannah]], the fertile land in the north of the country, opposed to the green of the forests in the south.
File:Flag of Niger.svg|[[Flag of Niger]] (1960). The orange is said to represent the [[Sahara desert]] in the north, and the orange disk symbolises either the sun or independence.
File:Flag of Zambia.svg|[[Flag of Zambia]] (1964/1996). The orange is said to represent the land's natural resources and mineral wealth.
File:Flag of Bhutan.svg|[[Flag of Bhutan]] (1969). The orange background represents the [[Buddhist]] spiritual tradition. 
File:Flag of Sri Lanka.svg|[[Flag of Sri Lanka]] (1972). The orange band represents the [[Sri Lankan Tamils]], one of the three main ethnic groups in the country.
File:Flag of Armenia.svg|[[Flag of Armenia]] (1990). According to the Armenian Constitution, the orange (also called apricot colour) represents the creativity and hard-working nature of the Armenian people. 
</gallery>

===Geography===
* Orange is the national colour of the Netherlands. The royal family, the [[House of Orange-Nassau]], derives its name in part from its former holding, the principality of [[Orange, Vaucluse|Orange]]. (The title ''[[Prince of Orange]]'' is still used for the Dutch heir apparent.)
*The Republic of the [[Orange Free State]] ({{Langx|nl|Oranje-Vrijstaat}}) was an independent [[Boer]] republic in southern Africa during the second half of the 19th century, and later a [[British colony]] and a province of the [[Union of South Africa]]. It is the historical precursor to the present-day [[Free State (province)|Free State province]]. Extending between the Orange and [[Vaal river]], its borders were determined by the United Kingdom in 1848 when the region was proclaimed as the Orange River Sovereignty, with a seat of a British Resident in [[Bloemfontein]].
*''[[Oranjemund]]'' (German for 'Mouth of Oranje') is a town situated in the extreme southwest of Namibia, on the northern bank of the [[Orange River]] mouth.

===Contemporary political and social movements===

Because of its symbolic meaning as the orange colour of activity, orange is often used as the colour of political and social movements.
* [[Christian democratic]] political ideology and political parties, which are based on [[Catholic social teaching]] and [[Neo-Calvinist]] theology.<ref name="Witte1993"/><ref name="Reuchamps2014"/>
* The [[Orange Institution]] is a pro-British Protestant association based in [[Northern Ireland]].
* Orange was the rallying colour of the 2004–2005 [[Orange Revolution]] in Ukraine.
* Orange was the colour used by the historical [[Liberal Party (UK)|Liberal Party]] of the [[United Kingdom]] .
* On 14 September 2017 North America's [[United Synagogue of Conservative Judaism]] began to use orange as part of a regarding effort.<ref>{{cite web|url=https://twitter.com/USCJ/status/908349855382294528|title=Please visit our new site|last=USCJ|access-date=22 January 2018}}</ref>
* Orange was used as a rallying colour by [[Israel]]is (such as Jewish settlers) who opposed [[Israel's unilateral disengagement plan]] in the Gaza Strip and the West Bank in 2005.
* Orange ribbons are used to promote awareness and prevention of [[self-injury]].
* Orange is used in the [[ribbon of Saint George|ribbon]] of the [[Order of St. George]], a patriotic symbol in Russia.
* Orange is the [[Political color|party colour]] of several Christian democratic political parties, as well as others:
{{div col|colwidth=22em}}
* [[Alliance for the Future of Austria]] (BZÖ)
* [[American Solidarity Party]] (ASP), United States
* [[Bharatiya Janata Party]] (BJP), India
* [[Christian Democrats (Denmark)|Christian Democrats]], Denmark
* [[Christen-Democratisch en Vlaams|Christian Democratic and Flemish]] (CD&V), Belgium
* [[Centre démocrate humaniste|Humanist Democratic Centre]] (CDH), Belgium
* [[Christlich Soziale Partei (Belgium)|Christian Social Party]] (CSP), Belgium
* [[Christian Democratic People's Party of Switzerland|Christian Democratic People's Party]], Switzerland
* [[Christian Democratic Union (Germany)|Christian Democratic Union]], Germany
* [[Christian Social People's Party]], Luxembourg
* [[Citizens-Party of the Citizenry]], [[Spain]]
* [[Czech Social Democratic Party]]
* [[Democratic Liberal Party (Romania)|Democratic Liberal Party]], Romania
* [[Democratic Movement (France)|Democratic Movement]], France
* [[Free Patriotic Movement]], Lebanon
* [[Party Workers' Liberation Front 30th of May]] (Frente Obrero), Curaçao
* [[Fidesz|Fidesz – Hungarian Civic Union]]
* [[Independence Party of Minnesota]]
* [[Justice and Truth Alliance]], Romania
* [[Move Forward Party]], Thailand 
* [[Nacionalista Party]], Philippines
* [[National Union (Israel)|National Union]], Israel
* [[New Democratic Party (Canada)|New Democratic Party]], Canada
**The NDP's unexpected sweep of seats in Quebec and its consequent rise to official opposition in the [[2011 Canadian federal election|2011 federal election]] became known as the "Orange Wave" ({{lang|fr|la vague orange}}) or "Orange Crush".
* [[Orange Democratic Movement]], Kenya
* [[Orange Movement]], Italy
* [[Our Ukraine–People's Self-Defense Bloc]]
* [[Palikot's Movement]], Poland
* [[People's National Party]], Jamaica
* [[People First Party (Republic of China)|People First Party]], Republic of China (Taiwan)
* [[PORA]], Ukraine
* [[Pwersa ng Masang Pilipino]], Philippines
* [[Québec solidaire]], Canada
* [[Reformed Political Party]], Netherlands
* [[Republican Left of Catalonia]], Spain
* [[Shiv Sena (1966–2022)|Shiv Sena]], India
* [[Social Democratic Party (Portugal)|Social Democratic Party]], Portugal
* [[United Nationalist Alliance]], Philippines
* [[Valencian Nationalist Bloc]]-[[Coalició Compromís]], Spain
* [[Zares]], Slovenia
{{div col end}}

===Religion===
{{see also|Orange (colour)#Hinduism and Buddhism}}
* Orange, or more specifically [[saffron (color)|deep saffron]], is the most sacred colour of Hinduism.
* Hindu and Sikh flags atop [[mandirs]] and [[gurdwaras]], respectively, are typically a saffron-coloured pennant.<ref>{{cite web|url=https://www.fotw.info/flags/hindu.html#saffron |title=Hinduism |publisher=Flags of the World |access-date=2009-04-15}}</ref>
* Saffron robes are often worn by Hindu [[swami]]s and also by [[Buddhist monks]] in the [[Theravada]] tradition.
*In Paganism, orange represents energy, attraction, vitality, and stimulation. It can help with adapting, encouragement, and power.<ref>{{Cite web|title=Magical Properties of Colors|url=https://wiccaliving.com/magical-properties-colors/|access-date=2020-12-24|website=Wicca Living|language=en-US}}</ref>
<gallery mode="packed" heights="150px">
File:Monk on pilgrimage.jpg|[[Buddhist monk]]s in the [[Theravada Buddhism|Theravada]] tradition typically wear saffron robes. Although occasionally maroon, the colour normally worn by [[Vajrayana]] Buddhist monks is orange.
</gallery>

===Metaphysics and occultism===
* The "New Age Prophetess", [[Alice Bailey]], in her system called the [[Seven Rays]] which classifies humans into seven different metaphysical [[psychological types]], the "fifth ray" of "Concrete Science" is represented by the colour orange. People who have this metaphysical psychological type are said to be "on the Orange Ray".<ref>{{cite book | last = Bailey| first= Alice A. | author-link = Alice Bailey | title = The Seven Rays of Life | location= New York| year= 1995 |publisher = Lucis Publishing Company | isbn = 978-0-85330-142-4}}</ref>
* Orange is used to symbolically represent the second ([[Swadhisthana]]) [[chakra]].<ref>{{cite book |last=Stevens |first=Samantha |title=The Seven Rays: a Universal Guide to the Archangels |publisher=Insomniac Press |year=2004 |isbn=978-1-894663-49-6 |page=24}}</ref>
*In [[alchemy]], orpiment – a contraction of the Latin word for gold (aurum) and colour (pigmentum) – was believed to be a key ingredient in the creation of the [[Philosopher's stone|Philosopher's Stone]].<ref name="Grovier"/>

===Military===
In the [[United States Army]], orange has traditionally been associated with the [[dragoon]]s, the mounted infantry units which eventually became the [[US Cavalry]]. The [[1st Cavalry Regiment (United States)|1st Cavalry Regiment]] was founded in 1833 as the United States Dragoons. The modern coat of arms of the 1st Cavalry features the colour orange and orange-yellow shade called dragoon yellow, the colours of the early US dragoon regiments.<ref name="dragoons">{{cite web |url=http://www.tioh.hqda.pentagon.mil/Heraldry/ArmyDUISSICOA/ArmyHeraldryUnit.aspx?u=3109 |title=1st Cavalry Regiment |publisher=The Institute of Heraldry |access-date=2013-04-30 |url-status=dead |archive-url=https://web.archive.org/web/20130921060237/http://www.tioh.hqda.pentagon.mil/Heraldry/ArmyDUISSICOA/ArmyHeraldryUnit.aspx?u=3109 |archive-date=2013-09-21 }}</ref>
The [[Signal Corps (United States Army)|US Signal Corps]], founded at the beginning of the [[American Civil War]], adopted orange and white as its official colours in 1872. Orange was adopted because it was the colour of a signal fire, historically used at night while smoke was used during the day, to communicate with distant army units.
<gallery widths="180" heights="180px" class="center" mode="nolines">
File:Col gen cav 1786.png|The uniform of a French [[cavalry]] regiment in 1786.
File:001-Cav-RegtCOA.png|The coat of arms of the 1st Cavalry regiment, founded as a [[dragoon]] regiment, features a gold dragon and an orange shield, the traditional colours of the dragoons.
File:001-Signal-Command-SSI.svg|The shoulder sleeve insignia of the 1st Signal Command of the [[Signal Corps (United States Army)|US Signal Corps]]. Orange, the colour of traditional signal fires, and white are the official colours of the Signal Corps.
File:Vaandel-garde-gren-en-jag-voorkant--copy.jpg|The regimental colour of the Dutch [[Grenadiers' and Rifles Guard Regiment]]
</gallery>

Prior to and during the [[Napoleonic Wars]] a pale shade of orange known as ''aurore'' ("dawn") was adopted as the [[facing colour]] of several cavalry regiments in the French army. The colour resembled that of the early rising sun.

In [[German Army]], military police (''[[Feldjäger]]'') uses orange as corps colour (''[[waffenfarbe]]'').

In the [[Royal Netherlands Air Force]], aircraft may have a [[Military aircraft insignia|roundel]] with an orange dot in the middle, surrounded by three circular sectors in red, white, and blue.

In the [[Indonesian Air Force]], the [[Air force infantry]] and special forces corps known as [[Paskhas]] uses orange as their [[beret]] colour.

===Sports===
<gallery mode="packed" widths="200px" heights="200px" caption="The colour orange in sports">
File:NED-DEN Euro 2012 (24).jpg|Players from the [[Netherlands national football team]] (wearing orange) vs. [[Denmark national football team|Denmark]], [[Euro 2012]]
File:Bandy ball (Orange).JPG|[[Bandy ball]]s are vividly coloured to aid visibility against the ice 
File:Claude giroux.jpg|[[Claude Giroux]] of the [[Philadelphia Flyers]] hockey team (2011)
File:Mets Foul Pole.png|In the sport of [[baseball]] some [[foul pole]]s are orange, but only one in [[Major League Baseball]], belonging to the [[New York Mets]] at their home ballpark [[Citi Field]].
File:Boardslide in an orange shirt at Far Rockaway Skatepark - 2019.jpg|A skater [[boardslide]]s in an orange shirt at [[Far Rockaway skatepark]] during the Battle of the Beach contest (2019)
</gallery>

==See also==
* [[Amber (color)|Amber]]
* [[List of colors|List of colours]]
* [[Shades of orange]]
* [[Skin-contact wine]]

==Notes==
{{Reflist}}

==References==
*{{cite book
|last=Arvon
|first=Henri
|title=Le bouddhisme
|year=1951
|publisher=Presses Universitaires de France
|isbn=978-2-13-055064-8}}
*{{cite book
|last=Heller
|first=Eva
|title=Psychologie de la couleur: effets et symboliques
|year=2009
|publisher=Pyramyd (French translation)
|isbn=978-2-35017-156-2}}
*{{cite book
|last=Gage
|first=John
|title=La Couleur dans l'art
|year=2009
|publisher=Thames & Hudson
|isbn=978-2-87811-325-9}}
*{{cite book
|last=Gottsegen
|first=Mark
|title=The Painter's Handbook: A Complete Reference
|year=2006
|publisher=Watson-Guptill Publications
|location=New York
|isbn=978-0-8230-3496-3}}
*{{cite book
|last=Roelofs
|first=Isabelle
|title=La couleur expliquée aux artistes
|year=2012
|publisher=Group Eyrolles 
|isbn=978-2-212-13486-5}}
*{{Cite journal|last=Roy|first=Srirupa|title=A Symbol of Freedom: The Indian Flag and the Transformations of Nationalism, 1906–|journal=Journal of Asian Studies|volume=65|date=August 2006|oclc=37893507|url=http://www.umass.edu/sbs/pdf/srirupa_roy_article.pdf|issn=0021-9118|issue=3|url-status=dead|archive-url=https://web.archive.org/web/20121010182118/http://www.umass.edu/sbs/pdf/srirupa_roy_article.pdf|archive-date=2012-10-10}}
*{{Cite book|author1=Russo, Ethan |author2=Dreher, Melanie C. |author3=Mathre, Mary Lynn. |publication-date=March 2003
|year=2003
|title=Women and Cannabis: Medicine, Science, and Sociology
|edition=1st
|publisher=Psychology Press
|isbn=978-0-7890-2101-4<!--0789021013-->}}
*{{cite book
|last=Van Gogh
|first=Vincent
|title=Lettres à Théo
|year=2005
|publisher=Folioplus classiques
|isbn=978-2-07-030687-9}}
*{{cite book
|last=Van Gogh
|first=Vincent
|title=Lettres de Provence 1888–1890
|year=2010
|publisher=Auberon
|isbn=9782844981097}}
*{{cite book
|last=Varichon
|first=Anne
|title=Couleurs: pigments et teintures dans les mains des peuples
|year=2000
|publisher=Editions du Seuil
|location=Paris
|isbn=978-2-02-084697-4}}
*{{Cite book
|last=Willard
|first=Pat
|year=2002 
|title=Secrets of Saffron: The Vagabond Life of the World's Most Seductive Spice 
|publication-date=11 April 2002 
|publisher=Beacon Press 
|isbn=978-0-8070-5009-5<!--0807050083--> 
|url=https://books.google.com/books?id=WsUaFT7l3QsC}}
*{{Cite book
|last=Zuffi
|first=Stefano
|title=Color in Art
|year=2012
|publisher=Abrams
|isbn=978-1-4197-0111-5}}

==External links==
{{Commons and category|Orange (colour)}}
* {{usurped|1=[https://web.archive.org/web/20070704050726/http://tx4.us/mr/mrff6.htm Orange Spectrum Color Chart Listing]}} (archived 4 July 2007)

{{Web colors|colour}}
{{Shades of orange|*}}
{{Shades of red|Orange}}
{{Electromagnetic spectrum}}
{{Color topics|colour}}
{{Authority control}}

{{DEFAULTSORT:Orange (Colour)}}
[[Category:Optical spectrum]]
[[Category:Rainbow colors]]
[[Category:Secondary colors]]
[[Category:Tertiary colors]]