Sass function that takes a base color (html, rgb, or hsl) and number to calculate a rainbow color palette of colors equidistant from each other in the color spectrum

rainbow-colors.scss

@function rainbowColors($base-color, $number-of-colors) {
    
    $color-list: ($base-color);
    $degrees: 360/$number_of_colors;

    @for $i from 1 through $number_of_colors - 1 {
        $color-list: append($color-list, adjust-hue($base-color, $degrees * $i), comma)
    }

    @return $color-list;
}