Color - (Wheel|Circle|Disc|Star) (Hue Organization)

About

After Newton had used a prism to separate daylight and count seven individual colors (hue), it appeared to him that this was a closed system. By taking the violet end of the spectrum and linking it to the red start-point, he thus created a convincing circle of colors.

A color wheel or color circle is an abstract illustrative organization of color hues around a circle that shows relationships between colors from:

 1)

Type

Primary Colors

Most color wheels are based on:

  • three secondary colors,
  • and the six intermediates formed by mixing a primary with a secondary, known as tertiary colors,

For a total of 12 main divisions; some add more intermediates, for 24 named colors.

Additive

In a additive model (Plus colors)

  • the additive primary color are arranged at three equally spaced points around their color wheel.
  • the center is white or gray, indicating a mixture of different wavelengths of light (all wavelengths, or two complementary colors, for example).
  • Intermediate and interior points of color wheels and circles represent color mixtures.

The 12 main colors are:

Angle Color
0 red primary
120 green primary
240 blue primary
360 again the red

Subtractive

In a paint or subtractive color wheel (Minus Color)

  • the subtractive primary color are arranged at three equally spaced points around their color wheel.
  • the center is usually black, representing all colors of light being absorbed
  • Intermediate and interior points of color wheels and circles represent color mixtures.

Example of a red, yellow, blue

 2)

for a CMYK color wheel:

Angle Color
0 magenta primary
120 yellow primary
240 cyan primary
360 again magenta

Hierarchy

The color wheel shows a hierarchy of colors where:

  • the primary colors are located at 120 degrees of each other (the first been at 0 degree normally)
  • the secondary colors are located in between
  • and so on…

Opponent / Complementary colors

Other color wheels, however, are based on the four opponent colors, and may have four or eight main colors.

Documentation / Reference


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