Acier (SW 9170)
Illustrative room. Screen colors vary; test a sample before you paint.
Acier (SW 9170) is a deep, neutral gray from Sherwin-Williams: LRV 32, so it reflects about 32 percent of the light that hits it.
Colors that go with Acier
Four Sherwin-Williams colors picked for Acier by this site's color math: a trim white, a deeper gray, a quiet contrast from another family, a dark accent. Sherwin-Williams did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Acier, ranked by CIEDE2000 (deltaE): under 1.0 is indistinguishable, 1.0 to 2.3 very close, 2.3 to 5 noticeably different, over 5 clearly different.
| Brand | Closest color | Code | LRV | deltaE | How close |
|---|---|---|---|---|---|
| Benjamin Moore | Willow Creek | 1468 | 34.5 | 1.4 | very close |
| Behr | Iron Gate | MQ2-60 | 31.2 | 1.1 | very close |
| Valspar | Aspen Gray | 6004-2A | 34 | 1.6 | very close |
| PPG Paints | Lazy Afternoon | 1007-5 | 29 | 2.3 | noticeably different |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams gray colors nearest to Acier (LRV 32) by LRV.
Lighter than Acier
Darker than Acier
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 9170 |
| Hex | #9E9991 |
| RGB | 158, 153, 145 |
| HSL | 37°, 6%, 59% |
| LRV (light reflectance value) | 32 |
| Lab L*, a*, b* | 63.4, 0.4, 4.9 |
| Undertone | Warm |
| Temperature | neutral |
| Color family | Gray |
Same paint, two kinds of light
Acier (SW 9170), published as #9E9991
#8E8F8F
#AFA391
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Sherwin-Williams
More from Sherwin-Williams
Common questions
- What is the LRV of Acier (SW 9170)?
- Acier has an LRV of 32. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Acier is a deep color.
- What is the closest match to Acier in another brand?
- Iron Gate (Behr MQ2-60) from Behr, at a deltaE of 1.1 (very close).
- Is Acier warm or cool?
- Sherwin-Williams lists Acier as neutral, with a Warm undertone. Its Lab b* value is 4.9; a higher b* is warmer and yellower, a lower one cooler and bluer.
Sources: LRV and hex as published by the manufacturer, via PaintDB (CC BY 4.0). Color differences are CIEDE2000 values computed by this site from the hex values (data snapshot 2026-10-01). Color names and codes belong to their manufacturers.