Color expression and influencing factors

摘要

Color is a matter of perception and subjective interpretation. The factors that influence color are: 1. The source of light (sunlight, fluorescent light, tungsten light). 2. Directional differences (the angle from which the object is viewed and the angle from which it is illuminated). 3. Background and contrast. 4. The area covered by a color. 5. The observer per se. The color expression is a mixture of such attributes as hue (red, yellow, blue, green...) brightness, darkness, lightness and dullness.