Beans_Lessc::lib_contrast PHP Method

    protected function lib_contrast($args)
    {
        if ($args[0] != 'list' || count($args[2]) < 3) {
            return array(array('color', 0, 0, 0), 0);
        }
        list($inputColor, $darkColor, $lightColor) = $args[2];
        $inputColor = $this->assertColor($inputColor);
        $darkColor = $this->assertColor($darkColor);
        $lightColor = $this->assertColor($lightColor);
        $hsl = $this->toHSL($inputColor);
        if ($hsl[3] > 50) {
            return $darkColor;
        }
        return $lightColor;
    }