There's a free tool called Color Oracle that makes it very easy to apply color filters to your computer's display in order to simulate the different kinds of di

There's a free tool called Color Oracle that makes it very easy to apply color filters to your computer's display in order to simulate the different kinds of dichromatic colorblindness. https://colororacle.org https://colororacle.org I'm sure it's not perfect, but it at least helps make things a bit less tricky to get right.