Itten organised color study into seven fundamental categories of contrast

Johannes Itten’s color theory, which formed the basis of color instruction in the Bauhaus Preliminary Course, organises color relationships into seven fundamental categories of contrast: hue, light-dark, cold-warm, complementary, analogous, saturation, and extension. These categories give a systematic vocabulary for describing why colors look different from one another and how they interact. Itten’s color star — a 12-hue figure that unfolds and flattens Runge’s color sphere onto a single plane — modelled several of these contrasts at once: reading outward gives the zones of tints, the equatorial zone shows the pure hues, and the outer zones give shades toward black at the star’s tips. A common misconception is that ‘contrast’ means only light-vs-dark; Itten’s system shows hue, temperature, saturation, and proportion (extension) are equally valid contrast types.

Examples

Cold-warm contrast: blue-violet beside orange-yellow; complementary contrast: red beside green; saturation contrast: a vivid red beside a desaturated red-grey. These translate directly to palette-design decisions in a Hydra or GLSL sketch.

Assessment

Given a palette of four colors, identify which of Itten’s contrast types are active between each pair, then redesign the palette to maximise cold-warm contrast while minimising hue contrast.