A HSL to Hex Jekyll Filter

hsl-jekyll.rb

require 'color'

module Jekyll
  module HSLToHexFilter
    def hsl_to_hex(input)
      # Extract HSL components from the input string
      hsl_match = input.match(/hsl\((\d+),\s*([\d.]+)%,\s*([\d.]+)%\)/)
      hue, saturation, lightness = hsl_match.captures.map(&:to_f)

      # Create HSL object
      hsl_color = Color::HSL.new(hue, saturation, lightness)

      # Convert HSL to HEX
      hex_color = hsl_color.to_rgb.hex

      hex_color
    end
  end
end

Liquid::Template.register_filter(Jekyll::HSLToHexFilter)