Sherwin-Williams Cornwall Slate#949488 · LRV 29
Cornwall Slate reads as a yellow / warm — mid-tone — versatile but shifts visibly with light. The notes below cover the spec, what Sherwin-Williams SW 9131 actually looks like under different light, and the closest matches at competing US brands.
Color spec
| Brand | Sherwin-Williams |
| Name | Cornwall Slate |
| SKU | SW 9131 |
| Hex | #949488 |
| RGB | 148, 148, 136 |
| HSL | 60°, 5%, 56% |
| LRV | 29 |
| Undertone | yellow / warm |
| Family | Gray |
About Sherwin-Williams Cornwall Slate
Cornwall Slate sits in the mid-range at LRV 29, so it shifts visibly through the day — lighter and more open in morning light, deeper and moodier after dark. Because it carries almost no measurable hue, it stays a true neutral and pairs cleanly with nearly any trim or floor. South-facing rooms will pull it lighter and warmer, while north light cools it down.
Cornwall Slate is versatile enough for full rooms but has enough depth to anchor a space, so it suits living rooms, bedrooms and cabinetry alike. Grays like this read as a modern neutral and sit comfortably alongside both warm woods and cool metals.
Kompozit alternative
The closest hex in the Kompozit deck, ranked by ΔE2000 (perceptual color difference). ΔE under 2 is indistinguishable to most eyes; under 5 is a very close visual match.
Closest matches at every US brand
9 brands · top 5 each5 closest matches per brand by ΔE2000, computed against each brand's full deck. Tap any swatch for its full single-color spec; tap the brand title to browse all gray from that brand.
Valspar
Benjamin Moore
Behr
Dunn-Edwards
Clare
PPG / Glidden
Magnolia Home
Farrow & Ball
Similar Sherwin-Williams colors
closest in the Sherwin-Williams deckThe nearest shades to Cornwall Slate within Sherwin-Williams's own range, ranked by perceptual color distance — useful when you want the same look a touch lighter, darker, or warmer.
Coordinated palette
Generated by hue-rotating #949488 in HSL space. Pair Cornwall Slate with one accent and one neutral — the swatches below are starting points, not final picks.
Accessibility (WCAG contrast)
WCAG 2.1: AA = 4.5:1 normal text · AA Large = 3:1 large text · AAA = 7:1 normal text.