Coastal Grey vs River Valley

Both are Dulux colors. Coastal Grey reads as blue-grey, while River Valley reads as blue — two distinct hue families, not close cousins. At LRV 56 vs 44, Coastal Grey will read as the brighter of the two — a 12-point gap that matters most in north-facing or low-light rooms. They share a cool quality — useful to know if you're layering them in the same space. At ΔE 8.6, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.