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stevendaniels/argb_to_rgba.rb

Last active July 14, 2017 04:36
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ARGB to RGBA CSS Value
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argb_to_rgba.rb
# https://en.wikipedia.org/wiki/RGBA_color_space#ARGB
def argb_to_rgba(argb)
argb.gsub(/(?<a>..)(?<r>..)(?<g>..)(?<b>..)/) do
matches = Regexp.last_match
"rgba(#{matches[:r].to_i(16)},#{matches[:g].to_i(16)},#{matches[:b].to_i(16)},#{matches[:a].to_i(16) / 255.0})"
end
end
# argb_to_rgba('FFFF0000')
# # => rgba(255, 0, 0, 1.0)
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