u/SumadijskiAlkos

So I recently found out my best friend is colorblind, he cant see difference between gray and gray-ish shades of red, probably mild protanopia, anyways I wanted to prank him by asking him if he can see number XY and then show him a colorblind test picture where it says, “blow me”, or something like that.

Should look something like picture below.

Does anyone have like a tutorial, site, program etc to help me out?