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What is colour blocking?
Colour blocking sets crisp, sharp-cornered geometric blocks on the walls, in two or three colours that agree: a large rectangle behind a sofa, a high band running towards a door, a square above a console. It is neither an accent wall nor a pattern: it is planes of colour, set out with a tape measure and masking tape, that divide the room into zones and give every piece of furniture its place.
The gesture comes from painting - Mondrian, Rothko, Matisse's cut-outs - and from the architects' studios of the 1920s, where walls were coloured in planes to read the space. It returns today as the step after drenching: once you have understood that one colour can envelop, you learn to make two converse. It asks for colours composed to live together, and finishes that answer each other - precisely what our official pairings and our ranges of finishes allow.