Warna skala sass

color.scale($color,
  $red: null, $green: null, $blue: null,
  $saturation: null, $lightness: null,
  $whiteness: null, $blackness: null,
  $alpha: null)
scale-color(...) //=> color

e.g. scale-color($primary, $lightness: -10%)
Precious Peafowl