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Test Info:

<!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">
<meta name="assert" content="Tests that interpolation between two out-of-gamut doesn't gamut-map the end-points before interpolation">
<link rel="match" href="gradient-eval-006-ref.html">
<style>
:root {
--start: lab(75% 50 86.6); /* rgb(111.9% 55.94% -11.3%) */
--end: lab(75% -50 -86.6); /* rgb(-76.3% 83.91% 135.5%) */
--t: 0.5;
--big: 131070000px;
}
.test {
width: 100px;
height: 100px;
background: linear-gradient(in lab, 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>