(along with their HTML hexadecimal codes).
Pictured above is a graphic displaying red, lime and blue as the 3 primary colors However, in the 20th century, color theory was examined scientifically and the primary colors are now known to be red, green (actually lime or electric green ) and blue because their wavelengths are spread more evenly across the visible light spectrum. Actually that was based on a system that goes back centuries and even to this day, artists still use these as their primary colors. Perhaps you have learned in school that the three primary colors are red, yellow and blue. Go to Part 3 - Primary, Secondary, Tertiary, Quaternary and Quinary Colors The 3 Primary the 3 Secondary and the 6 Tertiary Colors