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A week ago I was contacted by SatanicSanta who said atlwiki.net isn't colourblind-friendly with its red and green links. As Santa himself isn't colourblind, I contacted sciguyryan today to see if the issue exists. Turns out it does:
[00:18:11] <ostPavel> guess I should take this to PM. Can you please have a look at http://ftbwiki.org/U...stPavel/Colours and tell me if the colours of first link and second link look different to you? And then http://atlwiki.net/U...stPavel/Colours (same page, different design colour-wise, it is red-blue and red-green in first and second case respectively)
[00:33:38] <sciguyryan> http://atlwiki.net/U...stPavel/Colours - there are two the same colour on that.[00:33:47] <sciguyryan> But they aren't. My screen reader tells me one is red and one is green.[00:33:59] <ostPavel> so they seem like the same colour to you[00:34:04] <sciguyryan> Yep.[00:34:07] <ostPavel> got it, thanks![00:34:15] <sciguyryan> I either see reds as greens or greens as reds. I have the most common form.[00:34:21] <ostPavel> I was told about that by a non-colourblind user and decided to double-check[00:34:43] <sciguyryan> They were correct[00:36:30] <sciguyryan> One way to counteract it is to use a symbol prefix on the links.[00:36:41] <ostPavel> hm[00:36:49] <ostPavel> alright, I'll consider that[00:38:44] <ostPavel> can I use this private conversation in a public forum post?[00:38:49] <sciguyryan> Sure.[00:38:54] <ostPavel> Thanks![00:39:09] <sciguyryan> I use a custom addon I wrote into Firefox to give me extra information so I never need to worry about it.[00:39:16] <sciguyryan> But not everyone uses stuff like that.[00:39:40] <sciguyryan> Borders, icons are usually common ways to distinguish that will work regardless of the colour blindness variants people have.[00:41:28] <sciguyryan> Otherwise you could never use red, blue or green in a context in which they would need to be differentiated since those are the ones that get hit the most. Of those blue is the rarest form I believe.[00:42:04] <ostPavel> it's suprising we had no complaints so far[00:44:32] <sciguyryan> You could also offer a theme variant for colourblindness.[00:45:00] <sciguyryan> If it proves too difficult to consider all the implications in a single theme that's always a way out.[00:45:20] <ostPavel> hm, we'll look into this, sounds like a decent solution
Guess we need to change the colour of nonexistent links or mark them somehow, possibly by making the link text bold (the official wiki does that) or italic. Sciguyrian suggested creating a separate wiki skin, which is IMO a nice and clean solution. On the other hand, colourblindness is common so we might want our main skin to be colourblind-tolerant, too.
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