Palette
A chosen set of colours used together in a design, a painting, a brand or a place.
Also: colour palette, colour scheme
The word first meant the board on which a painter sets out and mixes paint. It came to mean the range of colours a painter uses, and then any selected set of colours. A website, a film, a fashion collection or a city can each be said to have a palette. A good one is usually small: a few main colours, some neutrals and one or two accents. Limiting the palette is one of the simplest ways to make varied things look as if they belong together.