If you have a Mac, an app called Sim Daltonism[0] is quite good. I use it for most of my colorblind testing (including browsers). There's also an iOS version[1]. It has a number of CB types; not just the most common three.

[0] https://apps.apple.com/us/app/sim-daltonism/id693112260

[1] https://apps.apple.com/us/app/sim-daltonism/id1050503579