Copen Blue vs Sea Spray

Both from Sherwin-Williams's palette. Hue-wise, Copen Blue belongs to the blue-green family and Sea Spray to the green-grey family. They have nearly identical light reflectance values (59 vs 61), so they'll read as similarly Light in most lighting conditions. Copen Blue runs cool while Sea Spray is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. At ΔE 1.8, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.