Oklrab
The Oklrab color space is not registered in Color by default
Properties
Name: oklrab
White Point: D65 / 2˚
Coordinates:
| Name | Range* |
|---|---|
l | [0, 1] |
a | [-0.4, 0.4] |
b | [-0.4, 0.4] |
* Space is not bound to the range and is only used as a reference to define percentage inputs/outputs in relation to the Display P3 color space.
Figure 1. The sRGB gamut represented within the Oklrab color space.
Oklrab is a variation of Oklab that adjusts the lightness estimate to more closely mach that of CIELab. This alternate Oklab was designed as a trade-off for cases when a well defined reference white is desired, such as with Okhsl in color picking.
Channel Aliases
| Channels | Aliases |
|---|---|
l | lightness |
a | |
b |
Input/Output
Oklrab is not currently supported in the CSS spec, the parsed input and string output formats use the color() function format using the custom name --oklrab:
color(--oklrab l a b / a) // Color function
When manually creating a color via raw data or specifying a color space as a parameter in a function, the color space name is always used:
Color("oklrab", [0, 0, 0], 1)
The string representation of the color object and the default string output use the color(--oklrab l a b / a) form.
>>> Color("oklrab", [0.56808, 0.22486, 0.12585])
color(--oklrab 0.56808 0.22486 0.12585 / 1)
>>> Color("oklrab", [0.75883, 0.05661, 0.16138]).to_string()
'color(--oklrab 0.75883 0.05661 0.16138)'
>>> Color("oklrab", [0.9627, -0.07137, 0.19857]).to_string(percent=True)
'color(--oklrab 96.27% -17.842% 49.643%)'
Registering
from coloraide import Color as Base
from coloraide.spaces.oklrab import Oklrab
class Color(Base): ...
Color.register(Oklrab())