Lua implementation of HSLuv (revision 4), courtesy of Mark Wonnacott.
Copy the hsluv.lua file directly into your project or install from luarocks:
luarocks install hsluv
> hsluv = require 'hsluv'
> = hsluv.hex_to_hsluv('#123456')
248.60320341681 85.43201417605 21.04172364179
> = hsluv.husl_to_hex({248.60, 85.43, 21.04})
#123456
> = hsluv.rgb_to_hsluv({0.07, 0.20, 0.33})
248.49244211716 85.009956491035 20.58410610897
> = hsluv.hsluv_to_rgb({248.49, 85.00, 20.58})
0.070014042122372 0.19996570399156 0.32991848455264
For HPLuv, use hex_to_hpluv, hpluv_to_hex, rgb_to_hpluv and hpluv_to_rgb.
Copyright (C) 2019 Alexei Boronine
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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