WoW:USERAPI HexToRGBPerc

This page documents a <i>user-defined function</i> that you can copy and paste into your addon. Replace PREFIX with your addon or lib prefix to avoid conflicts between different versions of these functions.

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Takes a hex string (must be 3 or 6 chars long!) and converts it to a RGB percent set (0.0-1.0). If hex is invalid, return black (0,0,0).

local function HexToRGBPerc(hex)
    local rhex, ghex, bhex, base
    if strlen(hex) == 6 then
        rhex, ghex, bhex = strmatch('([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})', hex)
        base = 255
    elseif strlen(hex) == 3 then
        rhex, ghex, bhex = strmatch('([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])', hex)
        base = 16
    end
    if not (rhex and ghex and bhex) then
        return 0, 0, 0
    else
        return tonumber(rhex, 16)/base, tonumber(ghex, 16)/base, tonumber(bhex, 16)/base
    end
end