Limestone (SW 9599)
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Limestone (SW 9599) is a very deep, warm brown from Sherwin-Williams: LRV 13, so it reflects about 13 percent of the light that hits it.
Colors that go with Limestone
Four Sherwin-Williams colors picked for Limestone by this site's color math: a trim white, a deeper brown, 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 Limestone, 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 | Deep Creek | 1477 | 14.7 | 0.6 | indistinguishable |
| Behr | Patio Stone | N360-6 | 13.2 | 0.6 | indistinguishable |
| Valspar | Falcon's Plume | 6002-2C | 14 | 1.5 | very close |
| PPG Paints | Granite | 1022-6 | 15 | 3.5 | noticeably different |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams brown colors nearest to Limestone (LRV 13) by LRV.
Lighter than Limestone
Darker than Limestone
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 9599 |
| Hex | #6A655C |
| RGB | 106, 101, 92 |
| HSL | 39°, 7%, 39% |
| LRV (light reflectance value) | 13 |
| Lab L*, a*, b* | 43.0, 0.2, 5.8 |
| Undertone | Warm |
| Temperature | warm |
| Color family | Brown |
Same paint, two kinds of light
Limestone (SW 9599), published as #6A655C
#5B5C5A
#796E5C
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Sherwin-Williams
Comparisons that include Limestone (SW 9599)
More from Sherwin-Williams
Common questions
- What is the LRV of Limestone (SW 9599)?
- Limestone has an LRV of 13. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Limestone is a very deep color.
- What is the closest match to Limestone in another brand?
- Deep Creek (BM 1477) from Benjamin Moore, at a deltaE of 0.6 (indistinguishable).
- Is Limestone warm or cool?
- Sherwin-Williams lists Limestone as warm, with a Warm undertone. Its Lab b* value is 5.8; 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.