COLOR THEORY

Complex subject

Physical basis: the Electromagnetic (EM) Spectrum
-- Visible spectrum: wavelengths 350-780 nm
-- BLUE = 450 nm, Green = 530 nm, RED = 630 nm.

Tristimulus theory of color
-- we do not distinguish what the eye cannot differentiate
-- infinite dimensional space reduced to 3 dimensions!
-- many possible choice of 3 basis functions.