Colour plays in important role in infographics. Colour can be your most powerful design element. Colour wheel is a good tool to learn colours. Red, yellow, and blue are the primary colours, which can be mixed in order to produce other colours and hues. The three secondary colours (green, orange and purple) are created by mixing two primary colours. Another six tertiary colours are created by mixing primary and secondary colours.
The colours and hues can be complementary or analogous. Complementary colours are shown opposite to each other on the colour wheel and analogous hues are located near each other and are generated from the same hue.
The colours can also be described as warm and cool. Colours have value. The colours can light or dark. Lighter values of colours are called tints, and darker values are called tones. With colours you can set a mood, attract attention, or make a statement.
Playing with color combination, I would like to use colours which are next to each other on the colour wheel. I would like to use the light colours to make the infographic to look harmony and set a cooling tone for the factual data.