Acier vs Pewter Cast
Both are Sherwin-Williams colors. These are both greys, so the question isn't which hue to choose — it's where within grey to land. With LRVs of 32 and 31, they'll behave almost identically in terms of how much light they reflect back into a room. They share a neutral quality — useful to know if you're layering them in the same space. With a ΔE of 1.9, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Acier vs Pewter Cast in Real Spaces
1 real room side by side. Acier and Pewter Cast 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.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Color Details
Acier vs Pewter Cast Simulated Comparison
5 simulated room previews — drag the slider on each to see Acier on one side and Pewter Cast 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 Acier comparisons
See how Acier stacks up against other well-photographed colors across different brands and tones.
