What Does The Colour `blue` Signify?

The expression Blue may address to a number of related colours. When blue is a pure colour from a solitary source, it matches up with a wavelength variety of around 440-490 nanometres.

Blue is said to be one of the three main colours in the RGB system. Blue light has the smallest wavelength vary of the three addictive chief colours. The English language generally applies "blue" to address to any colour from navy blue to cyan. The opposite colour of blue is yellow. In the RGB colour scheme, colours are created by mixing red, green and blue colour.

When speaking about RGB, a few people apply blue to mean the precise blue, which differs in shade on the basis to the device used to exhibit the RGB colour.