Colour, Colour theory & using Colour in Interior Design

Colour is the most immediately felt element of any interior. Before a person reads a room — its
proportions, its materials, its layout — they feel its colour. Understanding colour is not about having good
taste. It is about understanding how the eye and the brain process light, how colours interact with each
other, and how the psychological and physiological effects of colour differ profoundly from person to
person.
This guide covers colour theory from first principles, how to build and apply a colour palette in practice,
the psychological and spatial effects of colour, and the critical but often overlooked subject of designing
with colour for neurodivergent users.