Background Colour Fader

Fades the page background slowly through the colour wheel.

In 2026: Works unchanged. The original stepped through a hard-coded list of 216 web-safe hex values because HSL did not exist yet.

Where it came from: Free script archives, late 90s. Origin unclear. MDN ↗

<script language="JavaScript">
var bgHue = 0;
setInterval(function () {
  bgHue = (bgHue + 1) % 360;
  document.body.style.backgroundColor = "hsl(" + bgHue + ",70%,18%)";
}, 80);
</script>