Part I and II – “Computer monitors display information using the RGB (Red-Green-Blue) color model. An RGB monitor synthesizes colors additively by selectively illuminating each of its pixel’s red, green, and blue phosphor dots at varying levels of intensity. The light from a pixel’s three phosphor dots blends together to synthesize a single color. In additive color synthesis, all hues of the visible spectrum of light are mixtures of various proportions of one, two, or three of the primary colors of light: red, green, and blue. (…) Our perception of hues, values, and chroma levels depends upon their interaction with adjacent hues, values, and chromas, which can result in color-contrast, value-contrast, and chroma-contrast effects, respectively.” (Pabini Gabriel-Petit – UXmatters)