Black and Violet (1923) by Wassily Kandinsky and the Golden Rectangle

Successive Golden Rectangles dividing a Golden Rectangle into squares (Black and Violet by Wassily Kandinsky).

Wassily Kandinsky (16 December 1866 - 13 December 1944) was a Russian painter, printmaker and art theorist. One of the most famous 20th-century artists, he is credited with painting the first modern abstract works.

Geometric abstract art is a form of abstract art based on the use of geometric forms sometimes, though not always, placed in non-illusionistic space and combined into non-objective (non-representational) compositions

Black and Violet 1923; Influenced by Cezanne, Matisse, and the rich, glowing colors of the Fauves, Kandinsky has been proclaimed a leading figure of abstract painting and one of the most influential abstract art pioneers.

A golden rectangle is a rectangle whose side lengths are in the golden ratio, one-to-phi, that is, approximately 1:1.618. A distinctive feature of this shape is that when a square section is removed, the remainder is another golden rectangle, that is, with the same proportions as the first. Square removal can be repeated infinitely, which leads to an approximation of the golden or Fibonacci spiral.