Illustrate Trivariate Colour Models
Conventional colour models based on the tristimulus theory all contain three variables and so are called trivariate models. Let us now consider three of the most useful models, the conversion relationships between them, and the most widely accepted colour standard.
Projection of Three Primary Colours of the RGB Model. In this additive process, an equal mixture of red, green, and blue light produces white light, while mixtures of two of the three primaries produce cyan, magenta, and yellow (C, M, Y).