<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!DOCTYPE html> <html lang="en"> <meta charset="utf-8"> <title>Bug 1577566, reference: The alpha channel should be clamped at the right time so that it doesn't bright colors.</title> <style> #box { width: 100px; height: 100px; background-color: rgb(0, 204, 0); /* 0, 0.8, 0 */ } </style> <div id="box"></div>