HSI
The HSI color space is not registered in Color by default
Properties
Name: hsi
White Point: D65 / 2˚
Coordinates:
| Name | Range |
|---|---|
h | [0, 360) |
s | [0, 1] |
i | [0, 1] |
Figure 1. The sRGB gamut represented within the HSI color space.
The HSI model is similar to models like HSL and HSV except that it uses I for intensity instead of Lightness or Value. It does not attempt to "fill" a cylinder by its definition of saturation leading to a very different look when we plot it.
Channel Aliases
| Channels | Aliases |
|---|---|
h | hue |
s | saturation |
i | intensity |
Input/Output
The HSI space is not currently supported in the CSS spec, the parsed input and string output formats use the color() function format using the custom name --hsi:
color(--hsi h s i / a) // Color function
The string representation of the color object and the default string output use the color(--hsi h s i / a) form.
>>> Color("hsi", [0, 1, 0.33333])
color(--hsi 0 1 0.33333 / 1)
>>> Color("hsi", [38.824, 1, 0.54902]).to_string()
'color(--hsi 38.824 1 0.54902)'
Registering
from coloraide import Color as Base
from coloraide.spaces.hsi import HSI
class Color(Base): ...
Color.register(HSI())