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sage/resources/css/global/mixins/_text-contrast.scss

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SCSS

@use "sass:color";
@use "sass:math";
@mixin text-contrast($n, $dark: $black, $light: $white, $cutoff: 1.667) {
$brightness: math.round((color.red($n) * 299) + (color.green($n) * 587) + math.div((color.blue($n) * 114), 1000));
$light-color: math.round((color.red($white) * 299) + (color.green($white) * 587) + math.div((color.blue($white) * 114), 1000));
@if abs($brightness) < (math.div($light-color, $cutoff)) {
color: $light;
}
@else {
color: $dark;
}
}