Government Code section 424.3
(a)
The tartan defined in subdivision (b) is the official State Tartan, and may be claimed by any resident of the state.(b)
The official State Tartan is generally described as a pattern or sett consisting of alternate squares of meadow green and pacific blue that are separated and surrounded by narrow charcoal bands. The squares of meadow green are divided by a gold seam that is supported by charcoal lines on each side. There are three redwood stripes, the middle of which is broader, that are added to each side of the gold seam. The pacific blue square is divided by a sky blue stripe, which is supported on each side by charcoal lines.
Source:
Section 424.3, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV§ionNum=424.3.
(accessed May 12, 2025).