The Diamondbacks' original colors were purple, black, teal and copper.
Their first logo was an italicized block letter "A" with a diamond pattern, and the crossbar represented by a snake's tongue. Prior to their inaugural season, they released their baseball caps. The home cap had a cream color crown with a purple visor and button. The road cap was black and had a turquoise visor and button. Their alternate cap had a turquoise crown with a purple visor and button. Depending on the cap, the "A" logo on the front of the cap had different color variations.
In the Diamondbacks' second season, they introduced a new logo which was a copper color snake in the shape of a letter "D". It was used on a solid black cap, which in the beginning, was worn as a road cap.
The franchise unveiled new uniforms and colors of Sedona Red, Sonoran Sand and black on November 8, 2006.
The red shade is named for the sandstone canyon at Red Rock State Park near Sedona, while the beige (sand) shade is named for the Sonoran Desert. A sleeve patch was added featuring a lowercase "d" and "b" configured to look like a snake's head.
The team also kept the "D" logo, but was slightly altered and put on an all red cap to be used as their game cap. They also kept the "A" logo with the new colors applied to it, with a solid black cap used as the alternate cap.
A similar color scheme is currently used by the Arizona Coyotes of the National Hockey League.