Warm red, intensified by a suitable yellow, is orange. This blend brings red almost to the point of spreading towards the spectator. But the element of red is always sufficiently strong to keep the colour from flippancy. orange is like a man, convinced of his own powers. Its note is that of the angelus, or of an old violin.
V. Kandinsky, Concerning the spiritual in art, Dover Publ. New York 1977, translated by M.T.H. Sadler