@charset “UTF-8”;

/// Programatically determines the lightness of a color. /// /// @argument {color (hex)} $hex-color /// /// @return {number (0-1)} /// /// @example scss /// _lightness($color) /// /// @access private

@function _lightness($hex-color) {

$-local-red-raw: red(rgba($hex-color, 1));
$-local-green-raw: green(rgba($hex-color, 1));
$-local-blue-raw: blue(rgba($hex-color, 1));

$-local-red: _gamma($-local-red-raw / 255);
$-local-green: _gamma($-local-green-raw / 255);
$-local-blue: _gamma($-local-blue-raw / 255);

@return $-local-red * 0.2126 + $-local-green * 0.7152 + $-local-blue * 0.0722;

}