luacolors is a collection of functions for common color conversions.
The luacolors.lua file should be dropped into an existing project and required by it.
luacolors = require "luacolors"###luacolors.sRGBtoXYZ(r, g, b)
Returns the CIEXYZ coordinates X, Y, Z for a given sRGB.
###luacolors.XYZtosRGB(X, Y, Z)
Returns the gamma-corrected RGB values r, g, b for a given CIEXYZ.
###luacolors.XYZtoLab(X, Y, Z)
Returns the CIELAB values L, a, b for a given CIEXYZ.
###luacolors.LabtoXYZ(L, a, b)
Returns the CIEXYZ values X, Y, Z for a given CIELAB.
###luacolors.LabtosRGB(L, a, b)
Returns the gamma-corrected RGB values r, g, b for a given CIELAB.
###luacolors.sRGBtoLab(r, g, b)
Returns the CIELAB values L, a, b for a given sRGB.
###luacolors.HSLtoRGB(h, s, l)
Returns the RGB values for a given HSL.
###luacolors.RGBtoHSL(r, g, b)
Returns the HSL values for a given RGB.
Any color included in http://en.wikipedia.org/wiki/CSS_colors .
Example:
luacolors.maroon -- returns {127, 0, 0}Several wikipedia pages: http://en.wikipedia.org/wiki/SRGB http://en.wikipedia.org/wiki/Lab_color_space http://en.wikipedia.org/wiki/CIE_1931_color_space http://en.wikipedia.org/wiki/HSL_and_HSV http://en.wikipedia.org/wiki/CSS_colors
Other: http://www.easyrgb.com/index.php?X=CALC for validating
MIT LICENSE
Copyright (c) 2014 Phoenix Enero
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.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.