@function a11y-color($background, $color) {
    @if contrast-ratio($background, $color) >= $min-contrast-ratio {
        @return $color;
    }

    $background-type: a11y-color-type($background);
    $step: 2%;
    @if $background-type == 'dark' {
        $step: - $step;
    }

    $breakout: 0;
    $previousColor: $color;
    @while contrast-ratio($background, $color) < $min-contrast-ratio and $breakout == 0 {
        $previousColor: $color;
        $color: shift-color($color, $step);
        @if ($color == $previousColor) {
            $breakout: 1;
        }
    }
    @return $color;
}
@function a11y-color-type($color) {
    $light-contrast: contrast-ratio(#ffffff, $color);
    $dark-contrast: contrast-ratio(#000000, $color);
    @if $light-contrast > $dark-contrast {
        @return "dark";
    }
    @return "light";
}