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| | Natural Color System Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-11-03) |
 | | It is based on the presumed six elementary color percepts of human vision: white, fl, red, yellow, green, and blue, which are those that allegedly perceptually cannot be defined in terms of others; all the other colors are considered composite perceptions that can be defined in terms of those six. |
 | | This means the appearance of a color is presumed to be readily predictable from its NCS notation; it is claimed the RGB notation could not do this because it often would look very "unintuitive". |
 | | The Natural Color System is unscientific, in that it is neither based on presently known scientific data nor tries to falsify theories by its own research programme: it is in fact largely an uncritical adoption of the discarded traditional system using red, yellow and blue as primary colors. |
| www.thelocalcolorartgallery.com /encyclopedia/Natural_Color_System (635 words) |
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