Bright and Dark,Warm and Cool
The colours of red, orange, and yellow are considered warm colours because they are the colours of fire. These hues are also said to advance, meaning they appear to come forward, making the walls feel closer. Thus, they can actually make a room feel cosy when used in decorating.
Blue, green, and violet are considered cool colours. When you think of a cool lake or ice covered pond, you see cool colours.
Shades of colours
shades aren't colours there.....shades. Shades are the colours black, grey and white.
Colour wheels contain warm and cool colours to show the colours of the world.
this is a wave of the colours it mentions above.
hexagonal colour wheel
This is another type of colour wheel.