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`	[-0.5, 0.5]
`bz`	[-0.5, 0.5]

^* 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:

color(jzazbz jz az bz / 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("jzazbz", [0, 0, 0], 1)

The string representation of the color object and the default string output use the color(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()
'color(jzazbz 0.16937 0.0312 0.12308)'

Registering

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

class Color(Base): ...

Color.register(Jzazbz())