This package provides an Elisp implementation of the HSLUV colorspace conversions as created by Alexei Boronine (@boronine), and documented on http://www.hsluv.org/
HSLuv is a human-friendly alternative to HSL.
CIELUV is a color space designed for perceptual uniformity based on human experiments. When accessed by polar coordinates, it becomes functionally similar to HSL with a single problem: its chroma component doesn't fit into a specific range.
HSLuv extends CIELUV with a new saturation component that allows you to span all the available chroma as a neat percentage.
The reference implementation is written in Haxe and released under the MIT license. It can be found at https://github.com/hsluv/hsluv The math is available under the public domain.
The recommended way is to use MELPA. If either is in your package-archives, do
M-x package-install RET hsluv RET
or you could use something like use-package:
(use-package hsluv)No further configuration is needed.
The following functions provide the conversions from RGB to/from HSLUV and HPLUV:
(hsluv-hsluv-to-rgb (list H S Luv))
(hsluv-hpluv-to-rgb (list H P Luv))
(hsluv-rgb-to-hsluv (list R G B))
(hsluv-rgb-to-hpluv (list R G B))If you want to run the tests, checkout this repository. Then, on a command-line near you, do:
$ make clean testwhich will run the tests defined in test/hsluv-test.el.
Test results will be collected in the file test-results.log