Mushroom vs Sea Mariner
Mushroom and Sea Mariner come from the same Sherwin-Williams collection. Hue-wise, Mushroom belongs to the beige-greige family and Sea Mariner to the blue-grey family. The 51-point LRV gap — 57 for Mushroom vs 7 for Sea Mariner — means Mushroom will open up a space more effectively. Where Mushroom leans warm, Sea Mariner reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 51.9 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Mushroom vs Sea Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see Mushroom 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 Mushroom comparisons
See how Mushroom stacks up against other well-photographed colors across different brands and tones.
With LRVs of 60 and 57, the two reflect almost the same amount of light.
Their light reflectance is nearly identical (LRV 58 vs 57), so neither reads brighter in a room.