Analogous Colours

Analogous means similar and is the name for a group of colours that lie immediately adjacent to each other on the colour wheel. Each of the three colours has one colour in common.
For example: Yellow, Yellow-Orange and Orange.
For example: Yellow, Yellow-Orange and Orange.
Warm Colours

Warm colours are mostly made of Red, Orange and Yellow. They are called warm because they remind us of warm things like the sun or fire. Warm colours tend to be more exiting and can actually make people feel warmer because they can slightly increase blood circulation and body temperature.
Cool Colours

Cool colours are made mostly of Green, Blue and Violet. They are called cool because they remind us of cool things like a cool forest, a cold lake, sky, air or ice. Cool colours tend to be psychologically soothing and can actually make people feel cooler because they can slightly lower the blood circulation and thereby decrease body temperature.
Neutral Colours

Neutral Colours are colours that are neither warm nor cool. They are the result of mixing two complementary colours (e.g Red and Green). These are all types of Brown. Black, White and Grey are are also neutral colours.
Here are some examples of how these colour schemes can be used in paintings