Warm Onyx vs Pewter Green
Warm Onyx is a Behr color while Pewter Green comes from Sherwin-Williams. Hue-wise, Warm Onyx belongs to the grey family and Pewter Green to the green-grey family. At LRV 12 vs 7, Pewter Green will read as the brighter of the two — a 5-point gap that matters most in north-facing or low-light rooms. The tonal difference — Warm Onyx's red character against Pewter Green's neutral — becomes most visible against white trim or in morning light. At ΔE 11.2, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Warm Onyx vs Pewter Green in Real Spaces
2 real rooms side by side. Seeing Warm Onyx and Pewter Green in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Pewter Green has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The brightness difference is modest but present — Pewter Green gives the walls a little more lift.
Color Details
Warm Onyx vs Pewter Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Warm Onyx 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 Warm Onyx comparisons
See how Warm Onyx stacks up against other well-photographed colors across different brands and tones.
