Editing Arizona Diamondbacks (section)

===1998–2006===
[[File:Stephen Randolph (35688752701) (cropped).jpg|thumb|upright|Uniform design from late 1990s through mid-2000s]]
The Diamondbacks' original colors were purple, black, teal and copper.<ref name="purplesedonared">{{cite press release|title=D-backs shed their skin after unveiling new uniforms, colors on runway|url=http://mlb.mlb.com/content/printer_friendly/ari/y2006/m11/d08/c1737471.jsp|publisher=MLB Advanced Media|website=Dbacks.com|date=November 8, 2006|access-date=July 11, 2019|archive-url=https://web.archive.org/web/20190711034345/http://mlb.mlb.com/content/printer_friendly/ari/y2006/m11/d08/c1737471.jsp|archive-date=July 11, 2019|url-status=live}}</ref> Their logo was an italicized block letter "A" with a diamond pattern, with the crossbar represented by a snake's tongue. This period saw the Diamondbacks wear several uniform combinations.

At home, the Diamondbacks wore cream uniforms with purple pinstripes. The primary sleeved uniform, worn from 1998 to 2000, featured the full team name ("Diamond" and "Backs" stacked together) in front and chest numbers. The alternate sleeveless version contained the "A" logo on the right chest, and was paired with purple undershirts. Before the 2001 season, the sleeved uniform was changed to feature the "A" logo. In all three uniforms, player names were teal with purple trim, and numbers were purple with white with teal trim.

The Diamondbacks' primary road gray uniform also had purple pinstripes. The first version featured "Arizona" in purple with white and teal trim along with black drop shadows, with chest numbers added. Player names were in purple with white trim, and numbers were teal with white and purple trim. In 2001, the uniform became sleeveless with black undershirts, and the lettering scheme was changed to purple with white, copper and black accents.

The alternate home purple uniform featured "Arizona" in teal with white and copper trim and black drop shadows. The letters were rendered in teal with copper and white trim, but were changed to copper with teal and white trim after only one season. This set was worn until 2002.

The alternate road black uniform featured the "A" logo on the right chest, while letters were purple with white trim and numbers were teal with white and purple trim. A zigzag pattern of teal, copper and purple was featured on the sleeves. In 2001, the uniform was changed to feature "Arizona" in front. The letters became purple with white and copper trim.

The Diamondbacks initially wore four different cap versions. The primary home cap is all-purple, while the road cap is black with a teal brim. They also wore a cream cap with purple brim, and a teal cap with purple brim. All designs featured the primary "A" logo. In 1999, the road cap became all-black and contained the alternate "D-snake" logo rendered in copper. Also, the teal and cream alternate caps were dropped.

The left sleeve of all four uniforms contained the snake logo with the full team name until the 2004 season, when it became exclusive to the road black uniform.