Two folds from an Astrolin Color Card pamphlet by Établissement Georget Fils Peintures Laquées et Vernis, Chantenay-Lès-Nantes (c. 1906), 6 3/10 x 3 3/4 inches (image courtesy Bibliothèque Forney, ...
The science and art of color theory is divided by a wheel or chart into three main categories: primary, secondary and tertiary. Color is something we perceive through a combination of wavelengths ...