ColorplanBenjamin Moore River Blue (2057-10) is a very dark blue with a cool blue-green undertone and an LRV of 6. Closest matches: Sherwin-Williams Moscow Midnight (SW 9142). 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 | 5.8 (dark; 0 = black, 100 = pure white) |
| HEX | #254952 |
| RGB | 37, 73, 82 |
| HSL | 192°, 38%, 23% |
About River Blue
River Blue (2057-10) is a very dark, muted blue from Benjamin Moore that leans green. With an LRV of 6, River Blue absorbs most light. It creates a dramatic, enveloping look and suits accent walls, cabinetry and well-lit rooms.
North-facing light makes River Blue read cooler and slightly darker, while warm south-facing light softens it. It's a good fit for accent walls, front doors, cabinetry and powder rooms. It's very close to Dark Harbor (CSP-720); you'd mostly see the difference side by side.
How River Blue changes with the light
River Blue is a deep color. In north-facing or dim rooms it reads darker and cozier; in south-facing rooms it shows more of its color. Either can work, depending on the mood you want.
North-facing rooms
River Blue will read even deeper in north light: great for a cozy, enveloping room, less so if you want it bright.
East-facing rooms
River Blue will look warmer and brighter in the morning and cooler and grayer by afternoon; check a sample at both times.
South-facing rooms
South light keeps River Blue from feeling heavy, so deep colors work well here.
West-facing rooms
River Blue looks cool in the morning and warms up in the golden late-afternoon light.
See River Blue in real homes
Photos people have shared of River Blue in their own rooms. Opens Instagram or Pinterest in a new tab.
River 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
Very close · ΔE 1.8
Also close: Seaworthy (ΔE 3.3)
Compare side by side →Farrow & Ball
Closest available · ΔE 7.6
Also close: Carriage Green (ΔE 10.0)
Compare side by side →Behr
Closest available · ΔE 9.9
Also close: Midnight Blue (ΔE 10.2)
Compare side by side →Similar Benjamin Moore colors
River Blue questions
What undertone does River Blue have?
River Blue has a cool blue-green undertone, so it reads as a cool color. North-facing light makes River Blue read cooler and slightly darker, while warm south-facing light softens it.
Is River Blue a light or dark color?
River Blue has a light reflectance value (LRV) of 5.8 on a scale where 0 is black and 100 is pure white, which makes it a very dark color. With an LRV of 6, River Blue absorbs most light. It creates a dramatic, enveloping look and suits accent walls, cabinetry and well-lit rooms.
What is the closest match to River Blue in other paint brands?
Sherwin-Williams: Moscow Midnight SW 9142 (very close, ΔE 1.8); Farrow & Ball: Hague Blue No.30 (closest available, ΔE 7.6); Behr: Very Navy M500-7 (closest available, ΔE 9.9). Matches are calculated with the CIEDE2000 color difference formula; always check a physical sample before buying.
What trim and ceiling color goes with River Blue?
Try Lily White (2128-70) on trim and Wedding Veil (2125-70) on the ceiling. Both are Benjamin Moore whites that share River Blue's undertone.
Where does River Blue work best?
River Blue works well in accent walls, front doors, cabinetry and powder rooms. With an LRV of 6, River Blue absorbs most light. It creates a dramatic, enveloping look and suits accent walls, cabinetry and well-lit rooms.
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