Purple

Purple is a general term for the range of shades of color occurring between red and blue. It is formed (in both subtractive pigment and additive light combinations) by mixing the primary color red and blue in varying proportions, with possibly a very small quantity of the third primary color (green for light or yellow for pigment). There is disagreement over exactly which shades can be described as purple, some people preferring more precise terms such as magenta or heliotrope for particular shades. A difference in retina sensitivity to red and blue light between individuals can cause further disagreement. Purple is sometimes confused with the more narrowly-defined spectral color violet. In color theory a 'purple' is defined as any non-spectral color between violet and red. In art, purple is the color on the color wheel between magenta and violet and its tint and shade. This color, electric purple, is shown below. In human color psychology, purple is associated with royalty,... full article at wikipedia