chromium/chrome/test/data/lens/dynamic_color.html

<!DOCTYPE html>
<html>
  <head>
    <title>Grape</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        background-color: gray;
      }
      div {
        display: inline-block;
      }
      .non-vibrant-muted-green {
        background-color: #80C080;
        width: 40%;
        height: 20vh;
      }
      .vibrant-near-tangerine {
        background-color: #923404;
        width: 22%;
        height: 10vh;
      }
    </style>
  </head>
  <body>
    <div class="non-vibrant-muted-green">&nbsp;</div>
    <div class="vibrant-near-tangerine">&nbsp;</div>
  </body>
</html>