CSS color values something like hsl(139, calc(0.5 * 47.3%), 43.9%) throws invalid. Sites like Discord uses this kind of values. This value is valid in Chrome 49, and newer Chrome, Firefox Quantum. Actually this issue does not only happen in Centaury but also in Mypal, and other legacy Firefox-based browsers(Seamonkey 2.49.5, Firefox 52.9.0 ESR, Bollaris Navigator, Serpent, etc)
CSS color values something like
hsl(139, calc(0.5 * 47.3%), 43.9%)
throws invalid. Sites like Discord uses this kind of values. This value is valid in Chrome 49, and newer Chrome, Firefox Quantum. Actually this issue does not only happen in Centaury but also in Mypal, and other legacy Firefox-based browsers(Seamonkey 2.49.5, Firefox 52.9.0 ESR, Bollaris Navigator, Serpent, etc)