Keystone Gray vs Mega Greige
Both from Sherwin-Williams's palette. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. Mega Greige (LRV 37) reflects noticeably more light than Keystone Gray (LRV 29), a difference of 7 points that becomes especially apparent in rooms with limited natural light. Both lean warm, so they'll behave similarly in mixed or changing light conditions. The ΔE 6.0 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Keystone Gray vs Mega Greige in Real Spaces
2 real rooms side by side. Keystone Gray and Mega Greige 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
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Mega Greige reads slightly lighter here — a subtle but real difference in how open the space feels.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Mega Greige reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Keystone Gray vs Mega Greige Simulated Comparison
5 simulated room previews — drag the slider on each to see Keystone Gray on one side and Mega Greige 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 Keystone Gray comparisons
See how Keystone Gray stacks up against other well-photographed colors across different brands and tones.
