Let's get the identity right first, because the name trips people up: Craig & Rose's Pompadour is a soft powder blue — chalky and historical, with a cool grey undertone and the faintest green cast (LRV 42.9). It's a mid-light wall colour that does calm, faded elegance. (If you were picturing a pink, you're probably thinking of Edward Bulmer's Pompadour — a deep raspberry, and a different colour entirely.)
A powder blue this muted wants a quiet frame. Farrow & Ball All White (LRV 92) is the cleaner choice — a neutral pure white with just a faint warmth, so it never throws a hard, icy cast back at the walls. If you'd rather soften the step between wall and trim, Paint & Paper Library Sand I (LRV 95.4) is a warm, yellow-toned near-white that makes the scheme gentler and more lived-in. Both work: All White reads crisper, Sand I cosier.
The real trick with a cool, chalky blue is deliberate warmth. Mylands Cigar BH.20 (LRV 11.8) is a smoky tobacco brown that anchors Pompadour beautifully — skirtings in a brave scheme, a fireplace surround, a single bold cabinet. Blue and tobacco is a quietly classic pairing.
For a burnished accent, Dulux Copper Glow (LRV 30.1) is a soft terracotta-coral that carries the warmth of aged copper — a flat paint colour, mind, not a metallic finish. A panelled detail or a small piece of furniture is plenty.
On actual metals: aged brass and burnished copper flatter a powder blue — that's warm-against-cool doing its job. Keep them aged rather than bright and polished, which tips brash. For timber, pale and mid oaks sit happily; very orange pine fights the grey in the blue.
Practically: north light pushes Pompadour greyer and cooler, while warm afternoon sun brings the powdery softness out. Two coats on a big board, checked morning and evening, before you commit — and let the white do the heavy lifting on the trim.