What Can You Tell Me About The Colour Blue?

Did you know that many countries do not have separate words for blue and green.  In many Asian languages, blue and green are in the same band and therefore use the same word.

Blue tends to represent authority in human interpretation.  For this reason, the colour of many police uniforms in the world is given as blue, it looks like an official colour.  I know some government departments have blue official paper because of the weight it lends to the message of the communication.

Blue is distinct from white within the world of social distinctions.  For instance, blue collar workers are presumed to do a grafting job, something potentially manually, or non office based, whilst office works are supposed to be 'white collar'.

Blue makes up one of the primary colours of the RGB colour system, including also red and green. The traditional complementary colours to blue are yellow and orange (although never together themselves with the colour blue).

There are many superstitions surrounding the colour blue.  The general meaning of these is that the colour protects against many things.  This belief goes back to biblical times and may be connected with the fact that the Virgin Mary is usually depicted in a blue dress.  The beliefs are too lengthy and involved to list here but if you would like to know more there is a full listing in the Oxford Dictionary of Superstitions published by the Oxford University Press.