Cal. Gov. Code § 424
The official colors of the State are blue and gold. The specifications, references, and designations for the official colors are as follows:
Specifications: National Institute of Standards and Technology, Research Paper RP 1700.
International Commission on Illumination:
Blue: Y 0.063 x 0.204 y 0.165
Gold: Y 0.449 x 0.474 y 0.458
Munsell Renotation:
Blue: H V/C 7.3 PB 2.9/8.8
Gold: H V/C 2.0 Y 7.1/11.3
Munsell Book Notation:
Blue: H V/C 7.2 PB 2.9/9.1
Gold: H V/C 1 Y 7.3/11
References: Textile Color Card Association of New York, Inc.
Blue: Yale Blue, cable number 70086, Standard Color Card of America, 9th edition.
Gold: Golden Yellow, cable number 65001, United States Army Card of Official Colors for Arms and Services.
Designations: Inter-Society Color Council-National Bureau of Standards:
Yale Blue: Deep purplish blue.
Golden Yellow: Vivid yellow.
Ca. Gov. Code § 424