Color spec
| Brand | Behr |
| Name | Nocturnal Sea |
| SKU | 570D-7 |
| Hex | #173F67 |
| RGB | 23, 63, 103 |
| HSL | 210°, 63%, 25% |
| LRV | 5 |
| Undertone | cool blue tone |
| Family | Blue |
About Behr Nocturnal Sea
At LRV 5, Nocturnal Sea is about as dark as paint gets — it reads near-black on a wall and reveals its character only in direct daylight or under warm bulbs. Its blue undertone is the part to watch: it gets picked up by whatever sits next to it, so test it against your trim, floor and the room's main light before committing. In rooms with little natural light it can feel heavy, so reserve it for spaces you want to feel enveloping.
Nocturnal Sea earns its keep as a statement: accent walls, a front door, cabinetry, a moody powder room, or exterior trim where you want sharp contrast. Blues calm a room, which makes them popular in bedrooms, bathrooms and home offices.
Closest matches by brand
7 brands within ΔE 5The closest matches per brand by ΔE2000, computed against each brand's full deck. Only colors within ΔE 5 (close enough to substitute on a wall) are shown — brands with no real match are left off. Tap any swatch for its full single-color spec; tap the brand title to browse all blue from that brand.
Sherwin-Williams
Benjamin Moore
Valspar
PPG / Glidden
Glidden
Dutch Boy
HGTV Home by Sherwin-Williams
Similar Behr colors
closest in the Behr deckThe nearest shades to Nocturnal Sea within Behr'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 #173F67 in HSL space. Pair Nocturnal Sea 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.
Behr Nocturnal Sea Equivalents at Other Brands
Matching Nocturnal Sea from a different paint counter? Below is the single closest color in each major US deck and how close it really is. Remember that any paint store can also custom-tint Behr 570D-7 directly — these equivalents are for when you'd rather stay inside one brand's own deck.
Sherwin-Williams Equivalent of Nocturnal Sea
Sherwin-Williams has no exact twin of Nocturnal Sea. The nearest is Salty Dog (SW 9177) at ΔE 4.64 — close, but the difference shows next to trim and in side light. It sits at the same lightness (LRV 5 vs 5). Compare large swatches before substituting. See the full Salty Dog swatch →
Benjamin Moore Equivalent of Nocturnal Sea
At Benjamin Moore, the closest color to Nocturnal Sea is Symphony Blue (2060-10) — very close at ΔE 2.58, though not an exact twin. It sits at the same lightness (LRV 6 vs 5) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Symphony Blue swatch →
Valspar Equivalent of Nocturnal Sea
At Valspar, the closest color to Nocturnal Sea is Sapphire Earrings (M240) — very close at ΔE 2.76, though not an exact twin. It sits at the same lightness (LRV 5.2 vs 5) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Sapphire Earrings swatch →
PPG / Glidden Equivalent of Nocturnal Sea
PPG / Glidden has no exact twin of Nocturnal Sea. The nearest is Blue Tang (PPG1160-7) at ΔE 4.1 — close, but the difference shows next to trim and in side light. It runs slightly lighter (LRV 7 vs 5). Compare large swatches before substituting. See the full Blue Tang swatch →
Glidden Equivalent of Nocturnal Sea
Glidden has no exact twin of Nocturnal Sea. The nearest is Blue Tang (PPG1160-7) at ΔE 4.1 — close, but the difference shows next to trim and in side light. It runs slightly lighter (LRV 7 vs 5). Compare large swatches before substituting. See the full Blue Tang swatch →
Dutch Boy Equivalent of Nocturnal Sea
Dutch Boy has no exact twin of Nocturnal Sea. The nearest is Anchor's Away (140-7DB) at ΔE 3.87 — close, but the difference shows next to trim and in side light. It sits at the same lightness (LRV 5 vs 5). Compare large swatches before substituting. See the full Anchor's Away swatch →
HGTV Home by Sherwin-Williams Equivalent of Nocturnal Sea
HGTV Home by Sherwin-Williams has no exact twin of Nocturnal Sea. The nearest is Salty Dog (HGSW 9177) at ΔE 4.64 — close, but the difference shows next to trim and in side light. It sits at the same lightness (LRV 4 vs 5). Compare large swatches before substituting. See the full Salty Dog swatch →