Adjust hue, saturation, and lightness of sRGB colors via the perceptually uniform Okhsl color space.
$ echo '#ff0000' | hsl h+45
#0087fd
$ hsl -h
Adjust HSL of sRGB via Okhsl
Usage: hsl [OPTIONS] <ADJUSTMENT>...
Arguments:
<ADJUSTMENT> Parameter (h/s/l), operator (=/+/-/%), and value
Options:
--no-clamp Don't clamp values
-h, --help Print help
Examples:
echo '#c0ffee' | hsl h+30 s+0.1
echo '#bada55' | hsl s+0.2
echo '#facade' | hsl h-60 l+0.1\