// Programatically determines whether a color is light or dark // Returns a boolean // More details here robots.thoughtbot.com/closer-look-color-lightness

@function is-light($hex-color) {

$-local-red: red(rgba($hex-color, 1.0));
$-local-green: green(rgba($hex-color, 1.0));
$-local-blue: blue(rgba($hex-color, 1.0));

$-local-lightness: ($-local-red * 0.2126 + $-local-green * 0.7152 + $-local-blue * 0.0722) / 255;

@return $-local-lightness > .6;

}