Paul Klee

I am continually being made aware of parallels between music and the fine arts. As yet they defy analysis. It is certain that both art forms are defined by time. That can easily be proved.

The shades and nuances achieved from mixing the primary colours with each other and with black and white create a harmonic balance in which no one colour dominates.

Wassily Kandinsky

Music expresses itself by sounds, painting by colours. But the difference does not end here. Music, for example, organizes its means (sounds) within time, and painting its means (colours) upon a plane. YELLOW, for example, possesses the special capacity to ascend higher and higher, the sound of a trumpet played higher and higher becoming more and more "pointed". BLUE, with the completely opposite power to "descend" into infinite depths, develops sounds of the flute (when it is light blue), of the cello (when it has descended farther), of the double bass with its magnificent deep sounds. GREEN is well balanced and corresponds to the medium and the attenuated sounds of the violin. When skilfully applied, RED (vermillion) can give the impression of strong drum beats.

Wassily Kandinsky, "Concrete Art" 1938

The eye is strongly atttacted by light, clear colours, and still more strongly by colours that are warm as well as clear; vermillion stimulates like flame, which has always fascinated human beings. Keen lemon-yellow hurts the eye as does a prolonged and shrill bugle note the ear, and one turns away for relief to blue and green.

Wassily Kandinsky, "The effects of colour" 1911