Editing Ultramarine (section)

===Electric===
''Electric ultramarine'' is the tone of ultramarine that is halfway between [[blue]] and [[Violet (color)#Color wheel violet|violet]] on the [[RGB color model|RGB (HSV) color wheel]], the expression of the [[HSV color space]] of the [[RGB color model]].<ref>Maerz and Paul ''A Dictionary of Color'' New York:1930--McGraw Hill Color Sample of Ultramarine: Page 105, Plate 41, Color Sample F12. Ultramarine is shown as being one of the colors on the bottom of the plate representing the most highly saturated colors between blue and violet (the colors on the right of the plate represent the most highly saturated colors between violet and rose); ultramarine is shown as being situated at a position exactly one-half of the way between blue and violet.</ref>{{dubious|reason=There was no HSV in 1930. Not every color wheel is HSV. Munsell, which works much better than HSV, would've existed by then, though I'm not saying that's what the chart is.|date=December 2023}}