ABSTRACT
The perceived color of a material illuminated with white light is complementary to the color of the light which the material absorbs. For example, a material which absorbs violet light appears yellow. Complementary colors can be easily obtained from a color wheel. The first color wheel was developed by Sir Isaac Newton in 1666. Since then, numerous variations of the color wheel were designed by scientists and artists. A six-field color wheel based on the RYB model is displayed in Fig. 2.1. The color wheel displays the different color hues around a circle in a way that complementary colors are opposite to each other.