On my computer, Safari and Chrome both display in sRGB while Firefox displays in the "native" (aka wild west) RGB. You can verify this by opening up the "Digital Color Meter" app.

No, the color itself is ugly, Firefox will just show you the truth

It looks the same on my TN-panel monitor with Firefox 80 and Chrome 84 on Windows 10 and Linux. Could you post a screenshot?

It’s the same for my friend and I.

https://imgur.com/gallery/iDkW4qj

On Chrome & Ubuntu 20.04, left side is #FEFA51, right side is #FEFA53

On Firefox & Ubuntu 20.04, left side is #FEFA00, right side is #FEF952

Chrome and Firefox must be rendering in different colorspaces (I'd expect one is assuming sRGB, and the other is not doing any conversion).

I can't believe it took 10 years for Chrome to fix orientation: https://bugs.chromium.org/p/chromium/issues/detail?id=56845

I'm looking at your screenshot on both chromium and firefox, and I can't see a difference in color between the two sides of your picture. I can't see the difference when visiting the website directly either.

Checking the color code with the eyedropper of gcolor2, I see the site is #FCFC04 when checking it directly on both browsers, and in your picture, the right one is #FCFC07, while the left one is #FCFD00.

They all look the same to me though. It's not distinguishable to my eye.

So, on both my colleagues iMac and mine, they look very very different, however viewing the Imgur on my iPhone 8, I see no difference.

Strange

It could be the display and/or the OS.

Truetone?