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Natural Color System

Animation showing the NCS 1950 standard color samples in the NCS color circle and hue triangles.
The NCS color model is based on the three pairs of elementary colors (white–black, green–red, and yellow–blue), as defined by color opponency.
The colors of the Swedish flag are officially established to be NCS 0580-Y10R for the shade of yellow, and NCS 4055-R95B for the shade of blue

The Natural Color System (NCS) is a proprietary perceptual color model. It is based on the color opponency hypothesis of color vision, first proposed by German physiologist Ewald Hering.[1] The current version of the NCS was developed by the Swedish Colour Centre Foundation, from 1964 onwards. The research team consisted of Anders Hård, Lars Sivik and Gunnar Tonnquist, who in 1997 received the AIC Judd award for their work.[2][3] The system is based entirely on the phenomenology of human perception and not on color mixing. It is illustrated by a color atlas, marketed by NCS Colour AB in Stockholm.

  1. ^ Hering, Ewald (1964) [1878, Zur Lehre vom Lichtsinne, Wien]. Hurvich, L.M.; Jameson, D. (eds.). Outlines of a Theory of the light sense. Cambridge Mass.: Harvard University Press.
  2. ^ Hård, A.; Sivik, L.; Tonnquist, G. (1996). "NCS Natural Color System - from Concepts to Research and Applications. Part I and II". Color Research and Application. 21: 180–220. doi:10.1002/(SICI)1520-6378(199606)21:3<180::AID-COL2>3.0.CO;2-O.
  3. ^ "International Colour Association".
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