The seven types of color contrasts as inspired by the theory of Johannes Itten translated and transformed into typography.
The contrast of hue is the simplest of the seven. Typical combinations are yellow, red and blue or red, blue and green or blue, yellow and violet or yellow, green and violet. The contrast of extension is the contrast between small and great or little and much. The contrast between warm and cold shows the difference between colors like red, yellow and orange which are associated with warmth and the colors green, blue and violet which are associated with cold. Simultaneous contrast occurs when the eye, spontaneously generates the complementary color. The contrast of complements is when two colors are mixed together to become a neutral gray. Some complementary pairs are yellow and violet, red and green or blue and orange. The contrast of saturation is the contrast beween pure, unmixed color and diluted colors. The strongest expression of light and dark contrast is formed by the colors white and black and the sequence of grays between them.