css/css-images/gradient/gradient-eval-009.html

<!DOCTYPE html>
<html>
 <head>
  <title>Gradient interpolation</title>
  <meta name="fuzzy" content="maxDifference=1-2;totalPixels=0-10000">
  <link rel="author" title="Mike Bremford" href="mailto:mike@bfo.com">
  <link rel="help" href="https://www.w3.org/TR/css-color-4/#interpolation">
  <meta name="assert" content="Test gradient interpolation in LCH works if the hue angles are not normalized to 0..360">
  <link rel="match" href="gradient-eval-009-ref.html"> <!-- could be 007, this is the same but with 3600 added to each component -->
  <style>
   :root {
       --start: lch(60% 60 3670);
       --end: lch(60% 60 3890);
       --t: 0.5;
       --big: 131070000px;
   }
   .test {
       width: 100px;
       height: 100px;
       background: linear-gradient(in lch, var(--start) calc(var(--big) * (0 - var(--t))), var(--end) calc(var(--big) * (1 - var(--t))));
   }
 </style>
 </head>
 <body>
  <div class="test"></div>
 </body>
</html>