The NCS is based on the opponent process theory of vision. The Natural Color System is a color system based on the four unique hues or psychological primary colors red, yellow, green, and blue. The color defined as blue in the NCS or Natural Color System is an azure-like color shown at right (NCS 2060-B). Its complementary color is yellow.Īpproximations within the sRGB gamut to the primary colors of the Natural Color System, a model based on the opponent process theory of color vision It is a spectral color which lies at, or near, the short-wave (violet) end of the traditional "blue" and possibly was classified as " indigo" by Newton. It is at 240 degrees on the HSV color wheel, also known as the RGB color wheel.
This color is also called color wheel blue. The three additive primaries in the RGB color system are the three colors of light chosen such as to provide the maximum gamut of colors that are capable of being represented on a computer or television set. It is one of the three primary colors used in the RGB color space, along with red and green. This color is the brightest possible blue that can be reproduced on a computer screen, and is the color named blue in X11.
The color defined as blue in the RGB color model, X11 blue, is shown at right. Red, green, and blue lights, representing the three basic additive primary colors of the RGB color system, red, green, and blue
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