The history of primary colors is actually pretty cool. Colorists back in the 17th century thought that the 3 primaries were red, blue, and yellow, based on mixing pigments for paint, rather than rays of light. This primary color scheme is still widely taught in art classes today to teach students how to mix different colors. The development of the CIE color space was established in 1931, with the development of the standard observer mapping function, which is described here: https://support.hunterlab.com/hc/en-us/articles/203420099-CIE-Standard-Observers-and-calculation-of-CIE-X-Y-Z-color-values-AN-1002b
The history of primary colors is actually pretty cool. Colorists back in the 17th century thought that the 3 primaries were red, blue, and yellow, based on mixing pigments for paint, rather than rays of light. This primary color scheme is still widely taught in art classes today to teach students how to mix different colors. The development of the CIE color space was established in 1931, with the development of the standard observer mapping function, which is described here: https://support.hunterlab.com/hc/en-us/articles/203420099-CIE-Standard-Observers-and-calculation-of-CIE-X-Y-Z-color-values-AN-1002b