According to af Klint, blue represents the feminine and yellow the masculine principle. The same is true for the lily and the rose. She often uses the letters “u” and “w” in her paintings, , the “u” stands for spiritual and the “w” for matter. In Primordial Chaos, No.16, blue and yellow spirals resemble DNA strands spreading out diagonally across the pictorial space.

Hilma af Klint (1862-1944)
Primordial Chaos No.13
Group I, the WU/Rose Series 1906-1908
Oil on canvas
52.5x 37cm

Hilma af Klint – A pioneer of Abstraction, Moderna Museet