What does the colour blue mean?

I am used to seeing the colour blue to identify facilities for the disabled. The use of blue is commonly accompanied by a simple drawing of a person a wheelchair.

So, why does the West Vancouver Community Centre use blue to tell users "Do not enter"? This is a sign that is crying out for red.

Consumers, and/or facility users, have all come to associate meanings with specific colours. Some of it is cultural. (Red in China has some very different meanings than it does in North America.)

In North America red on signs is commonly associated with warnings. Blue is a more friendly colour. Cool, but still stylish. It looks a bit more serious and institutional, but it is not really as effective as a deterrent to keep people out. And if the sign does not have the desired effect, then it is not really doing its job.