css/css-images/gradient/gradient-hue-direction-ref.html

<!doctype html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <title>Direction of hue interpolation</title>
    <link rel="author" title="Jonathan Kew" href="mailto:jkew@mozilla.com">
    <style>
        body {
            background: #fff;
        }

        div {
            width: 200px;
            height: 50px;
            margin: 10px;
        }

        div.a {
            background-image: linear-gradient(to right in hsl shorter hue, red, orange);
        }

        div.b {
            background-image: linear-gradient(to right in hsl longer hue, red, orange);
        }

        div.c {
            background-image: linear-gradient(to right in lch shorter hue, red, orange);
        }

        div.d {
            background-image: linear-gradient(to right in lch longer hue, red, orange);
        }
    </style>
</head>

<body>
    <p>Each pair of gradients should match:</p>
    <div class=a></div>
    <div class=a></div>
    <hr>
    <div class=b></div>
    <div class=b></div>
    <hr>
    <div class=c></div>
    <div class=c></div>
    <hr>
    <div class=d></div>
    <div class=d></div>
</body>
</html>