As others are pointing out, it's worth remembering our monitors aren't necessarily even capable of producing true violet. And I'd add that monitors vary widely in quality themselves. This one I'm typing on doesn't yell to me "piece of crap", because I mostly do coding-type activities on it and it's plenty fine to do syntax highlighting, but sometimes when the rotating desktop background shows the same one on this monitor and the built-in Macbook monitor, it's like, huh, there's a lot of difference there. It really wouldn't be a great monitor to watch media on routinely.

We aren't even all looking at the same colors in the first place.