css/css-color/at-color-profile-001.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Color 5:  Specifying a color profile: the @color-profile at-rule</title>
<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
<link rel="help" href="https://drafts.csswg.org/css-color-5/#at-profile">
<link rel="help" href="https://drafts.csswg.org/css-color-5/#custom-color">
<link rel="match" href="greensquare-090-ref.html">
<meta name="assert" content="custom colorspace, ICC profile">
<style>
    /* sRGB except red and green colorants are swapped */
    @color-profile --foo {
        src: url(support/swapped.icc);
    }
    .test { background-color: red; width: 12em; height: 6em; margin-top: 0; }
    .ref { background-color: #090; width: 12em; height: 6em; margin-bottom: 0; } /* red-green swap of #900 sRGB */
    .test { background-color: color(--foo 0.6 0 0); } /* hex 99 / FF is decimal 0.6 */
</style>
<body>
    <p>Test passes if you see a green square, and no red.</p>
    <div class="ref"></div>
    <div class="test"></div>
</body>