 'Royal purple' (shown above) or the dark violet color known as "generic purple" is the common layman's idea of purple, but professional artists, following Munsell color system (introduced in 1905 and widely accepted by 1930), regard purple as being synonymous with the red-violet color shown at right, represented by the web color medium violet red, in order to clearly distinguish purple from violet and thus have access to a larger palette of colors.This red-violet color, called artist's purple by artists, is the pigment color that would be on a pigment color color wheel between pigment violet and pigment (process) magenta.In the Munsell color system, this color at its maximum chroma of 12 is called Red-Purple, or more specifically Munsell 5RP.