Pastel blue can drift into baby-nursery territory fast, so the trick is giving it a grown-up partner. Here Powder Sky carries the room with that soft, airy blue everyone wants right now, and Sable Brown steps in as the anchor that keeps it from feeling flimsy.
Soft Linen and Warm Greige fill the space between them, doing the quiet work so nothing competes. They are the neutrals you barely notice, which is exactly the point — they let the blue stay the star.
For the spark, Slate Blue bridges the two extremes: it echoes the pastel but with more depth, so it reads as a deliberate accent rather than a third unrelated color. This is a calm, current scheme that leans warm-minimal without going cold. Powder Sky leads, sable grounds, and the rest stay out of the way.