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:
“Actors work and slave—and it is the color of your hair that can determine your fate in the end.”
—Helen Hayes (1900–1993)
“Thus all our dignity lies in thought. Through it we must raise ourselves, and not through space or time, which we cannot fill. Let us endeavor, then, to think well: this is the mainspring of morality.”
—Blaise Pascal (1623–1662)