Home › Sherwin-Williams › Gray › Acier
Acier SW 9170
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: Subtle yellow undertone
In CIELAB, Acier sits at L* 63.4, a* 0.4, b* 4.8. Its hue angle is 86° and its chroma is 4.9, so it leans yellow only slightly — the undertone mostly shows next to whiter or grayer colors. It classifies as warm. Among Sherwin-Williams colors with a similar LRV (±5), it is warmer (more yellow) than 33%.
LRV 32.0: mid-tone
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 32.0, Acier is lighter than 41% of Sherwin-Williams colors. Reads clearly as a color. Best in rooms with good natural light, or as an accent wall; small dark rooms may feel smaller.
Closest Benjamin Moore match to Acier
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Escarpment | CC-518 | 1.38 | Very close | |
| Willow Creek | 1468 | 1.38 | Very close | |
| Gothic Arch | CSP-80 | 1.47 | Very close |
Closest Behr match to Acier
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color. Behr does not publish LRV, so Behr values here are estimates.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Iron Gate | MQ2-60 | 1.14 | Very close | |
| Fashion Gray | PPU18-15 | 1.15 | Very close | |
| River Pebble | BXC-54 | 1.56 | Very close |
Similar Sherwin-Williams colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Pavestone | SW 7642 | 1.18 | Very close | |
| Pewter Cast | SW 7673 | 1.63 | Very close | |
| Pewter Tankard | SW 0023 | 1.90 | Very close | |
| Rushing River | SW 7746 | 2.53 | Close — difference visible side by side | |
| Bedrock | SW 9563 | 2.74 | Close — difference visible side by side | |
| Polished Concrete | SW 9167 | 2.76 | Close — difference visible side by side |
Lighter and darker versions
Colors from Sherwin-Williams with nearly the same hue and saturation, one step lighter or darker.
- Stamped Concrete SW 7655 · lighter, LRV 35.1
- Palisade SW 7635 · lighter, LRV 35.2
- Truly Taupe SW 6038 · lighter, LRV 35.5
- Summit Gray SW 7669 · darker, LRV 29.6
- Keystone Gray SW 7504 · darker, LRV 29.5
- Cornwall Slate SW 9131 · darker, LRV 29.1
Colors that go with Acier
Sherwin-Williams's own coordinating colors for Acier:
- Extra White SW 7006
- Naval SW 6244
- Eider White SW 7014
Color-theory pairings — the nearest Sherwin-Williams color to each rotated hue, keeping the same lightness and saturation:
- Dustblu SW 9161 · complementary (180°)
- Polished Concrete SW 9167 · analogous (−30°)
- Illusive Green SW 9164 · analogous (+30°)
- Delft SW 9134 · triadic (120°)
- Autumn Orchid SW 9157 · triadic (240°)
Acier vs popular colors
- Functional Gray (Sherwin-Williams SW 7024, ΔE 3.6) is lighter (LRV 37.0 vs 32.0).
- Dorian Gray (Sherwin-Williams SW 7017, ΔE 4.3) is lighter (LRV 38.7 vs 32.0).
- Evergreen Fog (Sherwin-Williams SW 9130, ΔE 5.0) is darker (LRV 30.4 vs 32.0), more yellow/warm, more green, more saturated.