Ruby Color Contrast Algo

gistfile1.txt

def export_color(flags)
    unless flags & leave_value != 0 && value_element.nil?
        # Implement your logic for handling value_element
    end

    value = to_s
    value = value.upcase if caps
    value = "##{value}" if hash
    value_element.value = value unless value_element.nil?

    unless flags & leave_style != 0 && style_element.nil?
        style_element.style.background_image = "none"
        style_element.style.background_color = "##{to_s}"
        luminance = 0.213 * rgb[0] + 0.715 * rgb[1] + 0.072 * rgb[2]
        text_color = luminance < 0.5 ? '#FFF' : '#000'
        style_element.style.color = text_color
    end

    redraw_pad unless flags & leave_pad != 0 && is_picker_owner
    redraw_sld unless flags & leave_sld != 0 && is_picker_owner
end