ColorplanBenjamin Moore Slate Blue (1648) is a mid-tone blue with a cool blue-green undertone and an LRV of 42. Closest matches: Sherwin-Williams Languid Blue (SW 6226), Farrow & Ball Kittiwake (No.307) and Behr Peaceful Blue (S470-3). For trim, try Lily White (2128-70).
Room Preview
This photo shows walls only. Photos show the color in a real room's light; your own light will change it.
Suggested trim and ceiling are Benjamin Moore whites that share this color's undertone.
Color Details
| Family | Blue |
| LRV | 42.0 (mid-tone; 0 = black, 100 = pure white) |
| HEX | #9BB1BB |
| RGB | 155, 177, 187 |
| HSL | 199°, 19%, 67% |
About Slate Blue
Slate Blue (1648) is a mid-tone, muted blue from Benjamin Moore that leans green. With an LRV of 42, Slate Blue has visible color without darkening a room much.
North-facing light makes Slate Blue read cooler and slightly darker, while warm south-facing light softens it. It's a good fit for bedrooms, offices, kitchen islands and cabinets and accent walls. It's very close to Early Morning (CC-818); you'd mostly see the difference side by side.
How Slate Blue changes with the light
Slate Blue has a cool undertone. North light will push it cooler and grayer, while south and west light warm it up. If your room faces north, look at it next to a warm white trim.
North-facing rooms
Slate Blue has a cool undertone that north light will push cooler and grayer; warm white trim helps balance it.
East-facing rooms
Slate Blue will look warmer and brighter in the morning and cooler and grayer by afternoon; check a sample at both times.
South-facing rooms
Bright south light shows Slate Blue close to its true color, slightly lighter and warmer.
West-facing rooms
Slate Blue looks cool in the morning and warms up in the golden late-afternoon light.
See Slate Blue in real homes
Photos people have shared of Slate Blue in their own rooms. Opens Instagram or Pinterest in a new tab.
Slate Blue equivalents in other brands
The closest color from each brand. ΔE (“delta E”) scores how different two colors look: under 2.5 is very hard to tell apart on a wall, over 5 is clearly different.
Sherwin-Williams
Close · ΔE 2.5
Also close: Stardew (ΔE 4.1)
Compare side by side →Similar Benjamin Moore colors
Slate Blue questions
What undertone does Slate Blue have?
Slate Blue has a cool blue-green undertone, so it reads as a cool color. North-facing light makes Slate Blue read cooler and slightly darker, while warm south-facing light softens it.
Is Slate Blue a light or dark color?
Slate Blue has a light reflectance value (LRV) of 42.0 on a scale where 0 is black and 100 is pure white, which makes it a mid-tone color. With an LRV of 42, Slate Blue has visible color without darkening a room much.
What is the closest match to Slate Blue in other paint brands?
Sherwin-Williams: Languid Blue SW 6226 (close, ΔE 2.5); Farrow & Ball: Kittiwake No.307 (close, ΔE 2.6); Behr: Peaceful Blue S470-3 (very close, ΔE 2.2). Matches are calculated with the CIEDE2000 color difference formula; always check a physical sample before buying.
What trim and ceiling color goes with Slate Blue?
Try Lily White (2128-70) on trim and Wedding Veil (2125-70) on the ceiling. Both are Benjamin Moore whites that share Slate Blue's undertone.
Where does Slate Blue work best?
Slate Blue works well in bedrooms, offices, kitchen islands and cabinets and accent walls. With an LRV of 42, Slate Blue has visible color without darkening a room much.
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