@use "../variables/colours";

@use "sass:color";
@use "sass:math";

@mixin text-contrast($n, $dark: colours.$black, $light: colours.$white, $cutoff: 1.667) {
  $brightness: math.round((color.channel($n, "red") * 299) + (color.channel($n, "green") * 587) + math.div((color.channel($n, "blue") * 114), 1000));
  $light-color: math.round((color.channel(colours.$white, "red") * 299) + (color.channel(colours.$white, "green") * 587) + math.div((color.channel(colours.$white, "blue") * 114), 1000));

  @if math.abs($brightness) < (math.div($light-color, $cutoff)) {
    color: $light;
  }

  @else {
    color: $dark;
  }
}