We may give a technical answer to the guestion what is colour? like colour is a perception that occurs by the reach of the different wave lengths to the retina of the eye. Yet ,is this explanation enough to define the colour? Are the colours just a perception? Think that where will you feel yourself more dynamic and energetic in a dark room or in a  red room?

Due to the effects of colours on people ,we need to pay attention for colour while choosing our clothes and while dyeing the places in which we live.For example; bedroom may be pink,lunch room may be green.It would be more suitable to wear navy blue or  blue clothes while going to a job interview.
The effects of colours on people have been examined on the subjects like health,psychology,shopping, and production,mental and physical performance.

Meanings of colours:
White : represents the purity, cleanliness and stability.
Black: represents the power, passion and mourning in most of the countries.
Green: is the colour of nature and tranguillity.
Red: is the colour for vitality and dynamism. It represents the recklessness, perseverance and determination.
Yellow: is the most shining and attention grabbing colour. It represents the joy, intelligence, kindness and practicability.
Purple: is the colour for nobility, luxury and respect.
Pink: represents joy, trust and comfort.
Orange :  represents being outgoing and trust.
Navy Blue : represents the eternity, authority and productivity.
Brown: is the colour of earth and nature.
Gray: represents the prudency  and balance.