Marsh Fern vs Sea Mariner
Both from Sherwin-Williams's palette. Marsh Fern reads as beige-yellow, while Sea Mariner reads as blue-grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (6 vs 7), so they'll read as similarly Dark in most lighting conditions. Marsh Fern runs warm while Sea Mariner is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 26.2, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Marsh Fern vs Sea Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see Marsh Fern on one side and Sea Mariner 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 Marsh Fern comparisons
See how Marsh Fern stacks up against other well-photographed colors across different brands and tones.
