[mmjaa]

I kind of wish the OS Vendors were not asleep at the wheel, and had features to address these issues as a 'built-in' value proposition for their products.

I mean, it seems to me the sort of thing that a computer ought to know how to deal with, inherently .. and sure, some vendors do make an effort to make these kinds of human differences accessible.

But its just .. well maybe there is a broader malaise with OS vendors, asleep at the wheel, not caring too much about this on the OS level any more. We've moved on and its all web now, I guess.

I say this, as my first thought while reading this article was "surely this is just a hash-table away from being applicable everywhere ..." ..

[Larrikin]

Not sure about iOS, but Android has multiple color blind settings built in.

[Osmium]

iOS does too, along with a number of other display accommodations. It has adjustable filters for specific forms of color blindness, along with an Ishihara-like test pattern to help tune the filter to your specific needs.