Acier vs Rushing River
Both from Sherwin-Williams's palette. Acier reads as grey, while Rushing River reads as greige-grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (32 vs 34), so they'll read as similarly Medium in most lighting conditions. Acier runs neutral while Rushing River is decidedly warm, which means they'll respond very differently to warm vs cool light sources. At ΔE 2.9, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Acier vs Rushing River in Real Spaces
1 real room side by side. Acier and Rushing River 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.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Rushing River brings more warmth to the space, while Acier keeps things cooler and crisper.
Color Details
Acier vs Rushing River Simulated Comparison
5 simulated room previews — drag the slider on each to see Acier on one side and Rushing River 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.
At LRV 83 vs 32, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 32), opening up a space where Acier encloses it.
With LRVs of 32 and 30, the two reflect almost the same amount of light.
Agreeable Gray reflects far more light (LRV 60 vs 32), opening up a space where Acier encloses it.
At LRV 58 vs 32, Accessible Beige is decisively the brighter choice.
A 5-point LRV gap (32 vs 27) makes Acier the marginally brighter of the two.
French Gray reads slightly lighter (LRV 43 vs 32), a gap that shows most in low-lit rooms.
At LRV 55 vs 32, Tranquil Dawn is decisively the brighter choice.
A 12-point LRV gap (44 vs 32) makes Hardwick White the marginally brighter of the two.
Pure White reflects far more light (LRV 84 vs 32), opening up a space where Acier encloses it.
At LRV 66 vs 32, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 32, Shoji White is decisively the brighter choice.
At LRV 32 vs 12, Acier is decisively the brighter choice.
At LRV 68 vs 32, Skimming Stone is decisively the brighter choice.
At LRV 32 vs 12, Acier is decisively the brighter choice.
At LRV 45 vs 32, Saybrook Sage is decisively the brighter choice.
With LRVs of 32 and 31, the two reflect almost the same amount of light.
Acier reflects far more light (LRV 32 vs 7), opening up a space where Pine Needle encloses it.
Acier reads slightly lighter (LRV 32 vs 24), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 32), opening up a space where Acier encloses it.