Flagstone vs Curio Gray
Where Flagstone belongs to Benjamin Moore's range, Curio Gray is a Sherwin-Williams color. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. They have nearly identical light reflectance values (25 vs 26), so they'll read as similarly Medium in most lighting conditions. Both lean warm, so they'll behave similarly in mixed or changing light conditions. At ΔE 1.3, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Flagstone vs Curio Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Flagstone on one side and Curio 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 Flagstone comparisons
See how Flagstone stacks up against other well-photographed colors across different brands and tones.
