Autonomous (SW 9557)
Illustrative room. Screen colors vary; test a sample before you paint.
Autonomous (SW 9557) is a medium, neutral gray from Sherwin-Williams: LRV 57, so it reflects about 57 percent of the light that hits it.
Colors that go with Autonomous
Four Sherwin-Williams colors picked for Autonomous 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 Autonomous, 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 | Metro Gray | 1459 | 58.4 | 1.0 | indistinguishable |
| Behr | Silver Bullet | N520-2 | 55.7 | 0.7 | indistinguishable |
| Valspar | Filtered Shade | 4003-1B | 60 | 1.9 | very close |
| PPG Paints | Solitary State | 1009-3 | 57 | 1.2 | very close |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams gray colors nearest to Autonomous (LRV 57) by LRV.
Lighter than Autonomous
Darker than Autonomous
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 9557 |
| Hex | #C6C7C5 |
| RGB | 198, 199, 197 |
| HSL | 90°, 2%, 78% |
| LRV (light reflectance value) | 57 |
| Lab L*, a*, b* | 80.1, -0.7, 0.9 |
| Undertone | Neutral |
| Temperature | neutral |
| Color family | Gray |
Same paint, two kinds of light
Autonomous (SW 9557), published as #C6C7C5
#B4BDC3
#D8D1C5
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Sherwin-Williams
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Common questions
- What is the LRV of Autonomous (SW 9557)?
- Autonomous has an LRV of 57. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Autonomous is a medium color.
- What is the closest match to Autonomous in another brand?
- Silver Bullet (Behr N520-2) from Behr, at a deltaE of 0.7 (indistinguishable).
- Is Autonomous warm or cool?
- Sherwin-Williams lists Autonomous as neutral, with a Neutral undertone. Its Lab b* value is 0.9; 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.