Coastal Plain vs Marine
Both are Sherwin-Williams colors. These are both green-greys, so the question isn't which hue to choose — it's where within green-grey to land. With LRVs of 37 and 36, they'll behave almost identically in terms of how much light they reflect back into a room. The tonal difference — Coastal Plain's neutral character against Marine's cool — becomes most visible against white trim or in morning light. At ΔE 6.4, 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.
Color Details
Coastal Plain vs Marine Simulated Comparison
5 simulated room previews — drag the slider on each to see Coastal Plain on one side and Marine on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Coastal Plain comparisons
See how Coastal Plain stacks up against other well-photographed colors across different brands and tones.
