3 ms·

Isn't color blindness mixing up red & green? So why would a green design be better than a blue design? Naively, it's strictly worse.

• OJFord 4y ago
  You're right, that is naïve. 'Mixing up red & green' is one type (or a trait of some types), not the only one, and it doesn't mean say 'RGB' spans only two colours - it means some shades of red appear green and vice versa. It can also depend on context (red laser pointer invisible over a sea of green, say) and knowledge of the difference (presenter says something about their red laser pointer). There's no problem with using green, it's requiring it to contrast with red that's potentially problematic. For that reason it's probably a good general theme/background colour, even if that was the sole reason they were choosing one, because you'd be unlikely to want a contrasting red text colour over green background anyway.
  • tomp 4y ago
    Still doesn't explain why green would be better than blue. Don't all problems go away if you're just using blue?
    • lentil_soup 4y ago
      it's not about choosing only one colour, colour blindness and colour systems are more complicated than that. If you see the image under the "Double the tests, double the success" subtitle you'll see that the blue colours were actually failing a few of the APCA tests for colour contrast.