css/css-color/oklab-l-over-1-1.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Color 4: Verify lightness in Oklab is always clamped to a value between 0 to 1</title>
<link rel="help" href="https://drafts.csswg.org/css-color/#ok-lab">
<link rel="match" href="oklab-l-over-1-ref.html">
<meta name="assert" content="oklab() with lightness greater than 1">
<style>
    .square { border: 1px solid black; width: 200px; height: 200px}
    .ref { background-color: oklab(1 0.5 0.2); height: 100px}
    /* l = 1.5 should clamp back to 1 */
    .test { background-color: oklab(1.5 0.5 0.2); height: 100px}
</style>

<body>
    <p>Test passes if you see a square border with a single color inside.</p>
    <div class="square">
        <div class="ref"></div>
        <div class="test"></div>
    </div>
</body>