The system comprises two circles which are intended to demonstrate how the other colours can be created out of red, yellow and blue. The so-called «
Date: The engraver and entomologist introduced The Natural System of Colours between 1766 and 1770.
Country of origin: England
Basic colours: Red, yellow and blue
Bibliography: M. Harris, The Natural System of Colours, Licester Fields, ca. 1766; C. Parkhurst and R. L. Feller, “Who Invented the Color Wheel?”, Color Research and Application 7, pp. 217 – 230 (1982); W. Spillmann, “Color Systems”, in H. Linton, Color Consulting, New York 1992, pp. 169 – 183; John Gage, Colour and Culture, Practice and Meaning from Antiquity to Abstraction, Thames and Hudson, 1993, pp.194, 203, 221(mention and comment).