-- |
-- Specifies an 'AlphaColour' by its HSL values and an alpha value.
--
-- @
-- 'hsla' h s v 0.0 = 'transparent'
-- @
hsla :: Degrees -> Percentage -> Percentage -> Alpha -> AlphaColour Double
hsla h s l = withOpacity $ hsl h s l
hsla :: Degrees -> Percentage -> Percentage -> Alpha -> AlphaColour Double
hsla h s l = withOpacity $ hsl h s l
hsla h s l = withOpacity $ hsl h s l