Color theory, or more specifically traditional color theory, is a historical body of knowledge describing the behavior of colors — namely in color mixing, color contrast effects, color harmony, color
Johann Wolfgang von Goethe's color wheel from his 1810 Theory of Colours
Page from 1826 A New Practical Treatise on the Three Primitive Colours Assumed as a Perfect System of Rudimentary Information by Charles Hayter
Georg Christoph Lichtenberg. Göttingen, 1775, plate III.
Ignaz Schiffermüller, Versuch eines Farbensystems (Vienna, 1772), plate I.
In color theory, hue is one of the properties of a color, defined in the CIECAM02 model as "the degree to which a stimulus can be described as similar to or different from stimuli that are described a
HSV color space as a conical object
An image with the hues cyclically shifted in HSL space