Which colour goes where?
Build a room around three roles, not three equally bold walls.

The main wall
Choose the colour for your largest painted surface first. Compare it beside your floor and the furniture you are keeping.
The quiet companion
Use a softer neutral on adjoining walls or trim. Keep a sample beside the lead colour so their undertones can be judged together.
The small accent
Bring a deeper or warmer note into a cushion, a lamp or a small painted detail. It does not need to become another feature wall.
Try it with a room you love.
Explore a complete room idea, its palette and the materials that bring it together.
Concept imagery is illustrative. Use physical paint samples to confirm colour.