zlacker

I caution against relying on your own senses when designing for accessibility. I can tell the red and green buttons apart just fine, but I'm not colorblind. And even if I were, there's multiple kinds of colorblindness - and of vision disabilities in general, from dyslexia to astigmatism.

For small developers there's checker tools and simulators, but Apple is huge and has a responsibility to get this right.

>>sterli+(OP)
I know a person that can only see red clearly, so he shifts colors in the iOS settings to a red tint. Green icons shifted to red work fine, but what doesn’t work are the health and music icons which are white on red. Applying the color shift in iOS just turns these into red squares. This stuff is hard to get right. For him it’s better to not have single color icons with no outlines, but that’s the trend today. You might think less detail in icons would help accessibility but that’s not always the case.