Green Onyx vs Rare Gray
Green Onyx and Rare Gray come from the same Sherwin-Williams collection. Hue-wise, Green Onyx belongs to the green-greige family and Rare Gray to the grey family. The 6-point LRV gap — 38 for Rare Gray vs 31 for Green Onyx — means Rare Gray will open up a space more effectively. Both share a neutral character, which means they'll respond to light and surrounding materials in similar ways. ΔE 8.9 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Green Onyx vs Rare Gray in Real Spaces
1 real room side by side. Green Onyx and Rare Gray are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Rare Gray has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Green Onyx vs Rare Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Green Onyx on one side and Rare Gray 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 Green Onyx comparisons
See how Green Onyx stacks up against other well-photographed colors across different brands and tones.
With LRVs of 31 and 30, the two reflect almost the same amount of light.
Green Onyx reads slightly lighter (LRV 31 vs 21), a gap that shows most in low-lit rooms.