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Cornwall Slate SW 9131
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: Noticeable green undertone
In CIELAB, Cornwall Slate sits at L* 61.0, a* -2.2, b* 6.3. Its hue angle is 109° and its chroma is 6.7, so it leans green clearly enough to notice on a full wall. It classifies as neutral-warm. Among Sherwin-Williams colors with a similar LRV (±5), it is warmer (more yellow) than 38%.
LRV 29.1: dark
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 29.1, Cornwall Slate is lighter than 37% of Sherwin-Williams colors. Absorbs most light. Good for accent walls, cabinets, doors and exteriors; needs good lighting indoors.
Closest Benjamin Moore match to Cornwall Slate
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 | |
|---|---|---|---|---|
| Storm Cloud Gray | 2140-40 | 1.35 | Very close | |
| Arctic Shadows | 1559 | 1.95 | Very close | |
| Desert Twilight | 2137-40 | 2.75 | Close — difference visible side by side |
Closest Behr match to Cornwall Slate
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 | |
|---|---|---|---|---|
| Shady Willow | ECC-36-1 | 1.68 | Very close | |
| Incognito | N370-5 | 2.03 | Close — difference visible side by side | |
| Hunter's Hollow | MQ6-21 | 2.13 | Close — difference visible side by side |
Similar Sherwin-Williams colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Evergreen Fog | SW 9130 | 1.42 | Very close | |
| Illusive Green | SW 9164 | 2.39 | Close — difference visible side by side | |
| Canal Street | SW 9523 | 2.69 | Close — difference visible side by side | |
| Honed Soapstone | SW 9126 | 3.32 | Close — difference visible side by side | |
| Acacia Haze | SW 9132 | 3.66 | Close — difference visible side by side | |
| Felted Wool | SW 9171 | 3.77 | 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.
- At Ease Soldier SW 9127 · lighter, LRV 31.6
- Earl Grey SW 7660 · lighter, LRV 31.8
- Acier SW 9170 · lighter, LRV 32.0
- Studio Clay SW 9172 · darker, LRV 27.1
- Hammered Silver SW 2840 · darker, LRV 26.4
- Dovetail SW 7018 · darker, LRV 25.8
Colors that go with Cornwall Slate
Sherwin-Williams's own coordinating colors for Cornwall Slate:
- Gossamer Veil SW 9165
- Coquina SW 9158
- Frosty White SW 6196
Color-theory pairings — the nearest Sherwin-Williams color to each rotated hue, keeping the same lightness and saturation:
- Dusty Heather SW 9073 · complementary (180°)
- Elephant Ear SW 9168 · analogous (−30°)
- Acacia Haze SW 9132 · analogous (+30°)
- Whirlpool SW 9135 · triadic (120°)
- Autumn Orchid SW 9157 · triadic (240°)
Cornwall Slate vs popular colors
- Evergreen Fog (Sherwin-Williams SW 9130, ΔE 1.4) is about as light.
- Dorian Gray (Sherwin-Williams SW 7017, ΔE 7.2) is lighter (LRV 38.7 vs 29.1), more blue/cool, more red/pink.
- Beige Gray (Benjamin Moore ES-51, ΔE 7.2) is lighter (LRV 40.6 vs 29.1), more yellow/warm, more red/pink, more saturated.