A while ago I posted about whether colour blindness was something that designers should take more seriously. After all, about 8% of all the men in the world are colour blind. Of course, this does not mean that they cannot see colour (the term, colour blindness is a bit of a misnomer) but it does mean that they have difficulty discriminating between colours that the rest of us can easily tell apart. In my original post I was referring to the computer game, Call of Duty, and whether the gameplay could be reduced for colour blind players who may have difficulty telling the various colour tags apart that appear on the screen.
So it was quite interesting that I just came across news that the developers of SimCity have added three special colour filters that make adjustments to the colours on screen so that colour blind players can better discriminate. A great idea – but about time!!
Is colour blindness a problem in design? Colour blind is rare amongst females but is very common amongst males. Approximately 8% of all the men in the world have some form of colour blindness. Colour blindness is a bit of a misnomer of colour; most colour-blind people can see colour but confuse colours that so-called normal observers can easily distinguish between. The most common case is red-green colour blindness and such sufferers find it hard to tell reds and greens apart.
But does design take this into account sufficiently? One area where there may be a problem is in the gaming industry. I came across the following comment today where someone is reporting a problem using Call of Duty (a game I don;t play but which I understand is quite popular) on the Xbox. Apparently, the Gamertags of all the players are either green if they are on your team, or red if they are an enemy. Oops!! I wonder how much of a problem this is. The problem is probably greatest when colour is used to convey information (as in this case, friend or enemy) rather just for aesthetics (where the information may be conveyed by contrast alone).