The wide-gamut RGB color space (or Adobe Wide Gamut RGB) is an RGB color space developed by Adobe Systems, that offers a large gamut by using pure spectral primary colors. It is able to store a wider range of color values than sRGB or Adobe RGB color spaces. As a comparison, the wide-gamut RGB color space encompasses 77.6% of the visible colors specified by the Lab color space, while the standard Adobe RGB color space covers just 50.6% and sRGB covers only 35.0%.
When working in color spaces with such a large gamut, it is recommended to work in 16-bit per channel color depth to avoid posterization effects. This will occur more frequently in 8-bit per channel modes as the gradient steps are much larger.
As with sRGB, the color component values in wide-gamut RGB are not proportional to the luminances. Similar to Adobe RGB, a gamma of 2.2 is assumed, without the linear segment near zero that is present in sRGB. The precise gamma value is 563/256, or 2.19921875.
The white point corresponds to D50. The chromaticities of the primary colors and the white point are as follows:
| Color | CIE x | CIE y | Wavelength |
|---|---|---|---|
| Red | 0.7347 | 0.2653 | 700 nm |
| Green | 0.1152 | 0.8264 | 525 nm |
| Blue | 0.1566 | 0.0177 | 450 nm |
| White point | 0.3457 | 0.3585 |
Famous quotes containing the words color and/or space:
“For the profit of travel: in the first place, you get rid of a few prejudices.... The prejudiced against color finds several hundred millions of people of all shades of color, and all degrees of intellect, rank, and social worth, generals, judges, priests, and kings, and learns to give up his foolish prejudice.”
—Herman Melville (1819–1891)
“... the movie woman’s world is designed to remind us that a woman may live in a mansion, an apartment, or a yurt, but it’s all the same thing because what she really lives in is the body of a woman, and that body is allowed to occupy space only according to the dictates of polite society.”
—Jeanine Basinger (b. 1936)