Day 29: Relativity

Colours change depending on their neighbours. This is simultaneous contrast, famously explored by Josef Albers in Interaction of Color. A grey square looks warm on blue and cool on orange. Understanding this lets you use context to change how a colour is perceived — and stops you being surprised when it happens by accident.

Objective. Experience how surrounding colours change our perception of a colour.

Design a poster for a colour theory talk where one identical colour appears to be two different colours.

• Use one colour on at least two contrasting backgrounds
• The identical colour must be exactly the same value in both places
• Simple geometric shapes
• Include the talk title and details

• A convincing optical illusion
• Clear, minimal composition
• The concept is understandable

Make two different colours look identical by changing their surroundings.