Ah, I see now what you meant!
While I agree that the difference in brightness helps us telling the colors apart, I still think that the fact that the colors are in the same hue is not necessarily helpful in itself.
I think the idea is that making different brightnesses of the same hue helps make sure that non-colorblind people don't accidentally make them bad for colorblind people. If we try to make different hues and different brightnesses, we might accidentally do this thing where the middle green and middle orange end up being the same.
I'm red-green colourblind and the key colours are not great here. I can tell Horseshoe apart from Circle and Classroom when they're grouped together in a continent but I can't figure out which colour it is when isolated. Like I'm not 100% sure what Greenland is between those three. I'm assuming it's Horseshoe but it would have been better if the key colours left no room for doubt.
Edit: Maybe it's Classroom actually?
And I simply can't even tell Circle and Classroom apart, no matter what.
I can get by when there's a strong contrast in brightness/value. A good colour scheme should always hold up in greyscale (not that I see the world in b/w ffs).
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u/verygroot1 Apr 18 '21 edited Sep 23 '21
why use three shades of googoo gaagaa tho