Colour Harmony

Complementary

• Complementary colours are colours that are directly opposite each other
• The higher the contrast of these colours, the more vibrant the outcome will be
• Tricky to use in large doses
• Easy for work that you are wanting to stand out
• Not good to use on text
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Analogous

• Analogous are colours that are seen next to each other on the colour wheel. Usually match well
• Often found in Nature. Pleasing to the human eye
• One colour dominates, another supports and the last one is used as an accent

Triad

• Evenly spread around the colour wheel
• Vibrant even if pale or unsaturated 
• If used successfully;  the end result should be reasonably balanced, letting one lead and the others to accent

Split Complementary

• Variation of the complementary colours, Using two colours to adjacent to it's complement
• Less tension than the visual contrast
• Often good for beginners in graphic design
• Easy to mess up

Rectangle

• Uses four colours in two complementary pairs
• The richer colours offer a lot of variation
• The tetrad colours works better if you let one colour be dominant
• Balance the warm and cool colours out when designing

Square

• Similar to the Rectangle but more evenly spaced out around the colour circle
• Easier if one colour is more dominant
• Needs to balance the contrast between the warmer colours and the cooler colours

Complementary Colours are seen a lot in Film Merchandise and Advertisement. People do there own Pop Art Designs of certain things that they're currently enjoying to take it into their own hands. The image shown on the left has used two vibrant colours that blend well together as the colours are relevant to the image shown. They work well together because of how it contrasts to make one image but with mixing them together.