that there is no amount of different color schemes that will make a game accessible to colorblind people. The only consistent solution is to ensure that all relevant gameplay elements can be distinguished by something other than colorāpattern, shape, a symbol, an extra border, whatever. If you don't do that, I can't play your game properly.
(This rant brought to you by God of War: Ragnarok, which features color-coded circles for dangerous attacks. Red is unblockable/unparryable, yellow will stagger you if you block but is parryable. It would have been so easy to make one of these a hexagon or something but no.)
https://gameaccessibilityguidelines.com/ is a great resource for designers btw! There's many examples of what sorts of accessibility issues you can run into, as well as examples of good practice at handling these issues.
A lot of accessibility stuff, especially the basics, is actually pretty simple to deal with if you put some forethought into it. It's when these issues are just an afterthought that it becomes annoying.
