J. Frans Gerritsen
All colours are arranged according to the laws of colour perception—hue, brightness and saturation, therefore—in a diagramatic perceptual colour-space. Six chromatic colours, yellow, red, magenta, blue, cyan and green, lie along a wave line on the
Date: The diagram, constructed according to the laws of colour perception, appeared in 1975.
Country of origin: Holland
Basic colours: Six «full colours»: yellow, red, magenta, blue, cyan and green.
Form: Modified cylinder
Bibliography: F. Gerritsen, «Entwicklung der Farbenlehre», Göttingen 1984.