Coastal does not have to mean tired nautical stripes. This is the cleaner, quieter version for 2026 — soft and sun-washed, with one color doing the heavy lifting and the rest staying out of the way. Sea Glass Blue leads, that pale gray-blue you see in beach glass and shallow water, and it sets the whole mood.
Around it, Warm Sand and Driftwood Gray add the texture you actually want from a coastal room without going beige and boring. Crisp White keeps everything bright and airy, the way light off the water looks at midday. These four are the easy part, and you can move between them freely.
The color that makes it feel intentional is Deep Navy. Use it sparingly — a front door, a single accent wall, or cabinetry — and it grounds all that softness so the palette reads designed rather than washed out. That is the trade-off worth getting right here: too much navy and you lose the breeziness, too little and the room drifts. One strong dose is the sweet spot.