Kandinsky's basic plane is an active field in which colors exert forces of advance and recession

Kandinsky defined the ‘basic plane’ (BP) as the material surface on which a work is constructed — for him the square is its most typical form, matching the standard shape of a painted canvas. Unlike a passive backdrop, the BP is an active field: the recession and advance of form and color elements pull the surface toward and away from the viewer, so that the plane, ‘like an accordion, is pulled apart in both directions.’ Kandinsky noted that color elements possess this depth-driving power to a high degree — red, blue and grey combined produce variable depth effects modulated by adding further colors. Red is red’s most natural pairing with the square because it ‘lies firmly on the plane’ with ‘an intensive inner seething — a tension within it.’ For shader and generative work this governs perceived depth in flat 2D compositions independent of geometry.

Examples

Erich Mrozek’s paired studies (ca. 1929–30): the same red square advances in one composition and recedes in another depending on surrounding blue and grey fields. In GLSL: warm foreground regions over cool background regions reinforce depth without any z-sorting.

Assessment

Compose two 2D images using the same three-color palette so that in one the red advances and in the other it recedes. Explain which basic-plane principle you exploited.