Colour Theory and Application
Colour theory and application
This domain tests controlled colour, not a full palette used everywhere. Examiners look for a deliberate scheme, harmonious dominance, clear value structure and colour that supports the focal point.
Core rules
- Schemes: monochromatic (one hue plus neutrals), analogous (neighbours on the wheel), complementary (opposites), split-complementary (one hue plus the two neighbours of its opposite), and triadic (three evenly spaced hues).
- Harmony comes from dominance: let one family occupy most of the area, support it with a secondary family and a small accent.
- Contrast can be by hue, value, saturation or temperature. Warm colours generally advance; cool colours recede. Simultaneous contrast makes a colour look different against its neighbour.
- Separate value from colour: plan three to five tonal masses before adding hue. Keep shadows coloured, not black.
Worked example
An evening vegetable market: use a split-complementary plan of warm yellow-orange light, blue-violet shadows and muted green vegetables. Reasoning: the warm light unifies the scene and advances; cool shadows recede and separate planes; the strongest saturation and lightest accent sit on the vendor's face and nearest produce, so colour reinforces hierarchy. Neutral greys in the background prevent the complements from vibrating.
Traps
Equal areas of complementary colours, pure tube colours everywhere, black shadows, colouring outside the value plan, and rainbow palettes with no dominant family. Squint at the work: if the focal point does not separate in tone, the colour is not doing its job.