A nursery should feel calm the moment you walk in, and a soft powder blue does exactly that. This shade is light and gentle, never icy, so it soothes rather than chills. It is the kind of blue that looks lovely in both morning sun and the dim glow of a night feed.
A soft cream on the trim and ceiling keeps the room warm and welcoming, far cozier than a bright white would feel against the blue. A light gray on the crib, dresser, or rocker adds a quiet middle tone that keeps the scheme grounded and grown-up.
For a touch of definition, a pale navy accent works beautifully in art, a rug, or curtains. It gives the eye somewhere to rest and makes the whole palette feel considered, classic, and built to grow with the child.