In turn : Image : Cie chromaticity diagram wavelength . png ( which is now also on Commons ) is a modification by user : Hankwang of : image : Cie _ chromaticity _ diagram . png.
42.
Unfortunately there is no exact consensus as to what loci in the chromaticity diagram the red, green, and blue colors should have, so the same RGB values can give rise to slightly different colors on different screens.
43.
Indeed, the CIE 1931 color space chromaticity diagram shows that a combination of a pure red hue and a pure green hue ( on a line between them in the diagram ) will be perceived as yellow or orange.
44.
On a chromaticity diagram, the straight line connecting the extreme spectral colors ( red and violet ) is known as the line of purples ( or'purple boundary'); it represents one limit of human color perception.
45.
Not long after the first mathematical color model was developed by the chromaticity diagram, it could not be guaranteed that colors of the same perceived color difference around this color were at the same color distance with respect to the reference color.
46.
No mixture of colors, however, can produce a response truly identical to that of a spectral color, although one can get close, especially for the longer wavelengths, where the CIE 1931 color space chromaticity diagram has a nearly straight edge.
47.
For example, the standard CIE XYZ color space projects directly to the corresponding chromaticity space specified by the two chromaticity coordinates known as " x " and " y ", making the familiar chromaticity diagram shown in the figure.
48.
If this is true then Image : Dominant _ wavelength . png and Image : Cie chromaticity diagram wavelength . png are both derivative works of an ineligible source, and thus are both themselves ineligible ( assuming this kind of thing is more than " sweat of the brow " ).
49.
The familiar CIE ( " x ", " y " ) chromaticity diagram is very perceptually non-uniform; small perceptual changes in chromaticity in greens, for example, translate into large distances, while larger perceptual differences in chromaticity in other colors are usually much smaller.
50.
In color theory, " purple " colors are any colors on the line of purples on the CIE chromaticity diagram ( or colors that can be derived from colors on the line of purples ), i . e ., any color between red and violet, not including either red or violet themselves.
