River Rock vs Pewter Green
Where River Rock belongs to Benjamin Moore's range, Pewter Green is a Sherwin-Williams color. River Rock reads as beige-greige, while Pewter Green reads as green-grey — two distinct hue families, not close cousins. Pewter Green (LRV 12) reflects noticeably more light than River Rock (LRV 7), a difference of 5 points that becomes especially apparent in rooms with limited natural light. River Rock runs yellow while Pewter Green is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 14.2, 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
River Rock vs Pewter Green Simulated Comparison
5 simulated room previews — drag the slider on each to see River Rock on one side and Pewter Green 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 River Rock comparisons
See how River Rock stacks up against other well-photographed colors across different brands and tones.
