Jzazbz

The Jzazbz color space is registered in Color by default

Properties

Name: jzazbz

White Point: D65 / 2˚

Coordinates:

Name	Range^*
`jz`	[0, 1]
`az`	[-0.21, 0.21]
`bz`	[-0.21, 0.21]

^* Space is not bound to the defined range above but represents a practical range for HDR color spaces. CSS uses a range of jz = [0, 1], az = [-1, 1] and bz = [1, 1] for percentage input and output.

Jzazbz is a a color space designed for perceptual uniformity in high dynamic range (HDR) and wide color gamut (WCG) applications. Conceptually it is similar to CIELab, but claims the following improvements:

Perceptual color difference is predicted by Euclidean distance.
Perceptually uniform: MacAdam ellipses of just-noticeable-difference (JND) are more circular, and closer to the same sizes.
Hue linearity: changing saturation or lightness has less shift in hue.

Learn about Jzazbz

Channel Aliases

Channels	Aliases
`jz`	`lightness`, `j`
`az`	`a`
`bz`	`b`

Input/Output

Parsed input and string output formats support all valid CSS forms in addition to allowing the color() function format as well using the custom name --jzazbz.

jzazbz(jz az bz / a)          // Jzazbz function
color(--jzazbz jz az bz / a)  // Color function

The string representation of the color object will always default to the color(--jzazbz jz az bz / a) form, but the default string output will be the jzazbz(jz az bz / a) form.

>>> Color("jzazbz", [0.13438, 0.11789, 0.11188])
color(--jzazbz 0.13438 0.11789 0.11188 / 1)
>>> Color("jzazbz", [0.16937, 0.0312, 0.12308]).to_string()
'jzazbz(0.16937 0.0312 0.12308)'
>>> Color("jzazbz", [0.2096, -0.02864, 0.13479]).to_string(percent=True)
'jzazbz(20.96% -13.638% 64.186%)'
>>> Color("jzazbz", [0.09203, -0.07454, 0.07996]).to_string(color=True)
'color(--jzazbz 0.09203 -0.07454 0.07996)'

Registering

from coloraide import Color as Base
from coloraide.spaces.jzazbz.css import Jzazbz

class Color(Base): ...

Color.register(Jzazbz())