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// Common functions.
@function prepend($list, $value) {
@return join($value, $list);
}
// See https://www.sitepoint.com/using-sass-build-color-palettes/
@function color-diff($a, $b) {
$sat: saturation($a) - saturation($b);
$lig: lightness($a) - lightness($b);
$fn-sat: if($sat > 0, 'desaturate', 'saturate');
$fn-lig: if($lig > 0, 'darken', 'lighten');
@return (
adjust-hue: -(hue($a) - hue($b)),
#{$fn-sat}: abs($sat),
#{$fn-lig}: abs($lig)
);
}
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