The Colorado General Assembly adopted House Joint Resolution 97-1016  on 3 March 1997, designating an official Colorado State Tartan. The tartan is a pattern and colors that symbolize Colorado's splendor and history. The pattern or sett consists of primary blocks of forest green and cerulean blue separated by broad dividing bands of black, with the forest green checks containing two pairs of tram tracks consisting of lavender and white and with the cerulean blue checks containing a gold stripe with red guard lines. The official state tartan is a Celtic district tartan that may be worn by any resident or friend of Colorado whether or not of Celtic heritage.
Colorado State Tartan thread count, which may be verified on the website of the Scottish Tartans Authority:
- [Y/8] R6 MB34 K40 G4 W6 Lv6 W6 [G/64]
Colorado House Joint Resolution 96-1014 designated July 1 as Tartan Day in the State of Colorado.