Start with Soft Beige on the walls. It is the quiet, warm neutral that makes a bedroom feel settled the moment you walk in, with just enough color to feel like a hug instead of a blank wall. In a bedroom you want light that wraps around you, and this gentle beige does exactly that, holding onto warmth in the morning and softening into something restful at night.
To keep it from feeling heavy, bring in Warm White on the trim and any built-ins so the edges feel clean and fresh against the beige. Then add Walnut Brown in small doses for grounding, on a headboard, a nightstand, or a wood frame, to give the room a little richness and depth. Put the beige on the walls, the warm white on the trim, and let the brown show up where you touch and rest your eyes most.