title: Sass color lighten/darken function
body: <p>so I can not understand sass <em>lighten/darke</em>n <a href="https://sass-lang.com/documentation/modules/color" rel="nofollow noreferrer">color function</a>.</p>
  <p>I get it that it changes <code>hue</code>/<code>saturation</code>/<code>lightness</code> but how can I know what will be the <em>hex</em> value after I use this function?</p>
  <p>what will be the output color of <em>lighten/darke</em>n?</p>