Color spec
| Brand | Behr |
| Name | Constellation Blue |
| SKU | T18-18 |
| Hex | #3C4670 |
| RGB | 60, 70, 112 |
| HSL | 228°, 30%, 34% |
| LRV | 7 |
| Undertone | blue / cool |
| Family | Blue |
About Behr Constellation Blue
At LRV 7, Constellation Blue 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.
Constellation Blue 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 at every US brand
13 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 blue from that brand.
Benjamin Moore
PPG / Glidden
Sherwin-Williams
Dutch Boy
Dunn-Edwards
Diamond Vogel
Valspar
Kompozit
C2 Paint
Magnolia Home
Backdrop
Farrow & Ball
Clare
Similar Behr colors
closest in the Behr deckThe nearest shades to Constellation Blue 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 #3C4670 in HSL space. Pair Constellation Blue 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 Constellation Blue Equivalents at Other Brands
Matching Constellation Blue 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 T18-18 directly — these equivalents are for when you'd rather stay inside one brand's own deck.
Benjamin Moore Equivalent of Constellation Blue
Benjamin Moore's nearest match is Wizard (CC-966), visually identical in normal room light (ΔE 1.52). It sits at the same lightness (LRV 8 vs 7) and carries a cool blue undertone, so it substitutes for Constellation Blue without repainting risk. See the full Wizard swatch →
Sherwin-Williams Equivalent of Constellation Blue
Sherwin-Williams's nearest match is Valiant Violet (SW 6818), visually identical in normal room light (ΔE 1.77). It sits at the same lightness (LRV 6 vs 7) and carries a cool blue undertone, so it substitutes for Constellation Blue without repainting risk. See the full Valiant Violet swatch →
PPG / Glidden Equivalent of Constellation Blue
PPG / Glidden's nearest match is Daring Indigo (PPG1166-7), visually identical in normal room light (ΔE 1.86). It sits at the same lightness (LRV 7 vs 7) and carries a cool blue undertone, so it substitutes for Constellation Blue without repainting risk. See the full Daring Indigo swatch →
Dutch Boy Equivalent of Constellation Blue
At Dutch Boy, the closest color to Constellation Blue is Inky Blue (241-7DB) — very close at ΔE 2.14, though not an exact twin. It sits at the same lightness (LRV 7 vs 7) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Inky Blue swatch →
Dunn-Edwards Equivalent of Constellation Blue
At Dunn-Edwards, the closest color to Constellation Blue is Jazz Age Blues (DET574) — very close at ΔE 2.9, though not an exact twin. It sits at the same lightness (LRV 7 vs 7) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Jazz Age Blues swatch →
Diamond Vogel Equivalent of Constellation Blue
At Diamond Vogel, the closest color to Constellation Blue is Frozen Blue (0606) — very close at ΔE 3.06, though not an exact twin. It sits at the same lightness (LRV 7 vs 7) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Frozen Blue swatch →
Valspar Equivalent of Constellation Blue
At Valspar, the closest color to Constellation Blue is Skyline (8003-47G) — very close at ΔE 3.3, though not an exact twin. It sits at the same lightness (LRV 6 vs 7) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Skyline swatch →
Kompozit Equivalent of Constellation Blue
Kompozit has no exact twin of Constellation Blue. The nearest is Hot Sauna (1271) at ΔE 3.81 — close, but the difference shows next to trim and in side light. It sits at the same lightness (LRV 6 vs 7). Compare large swatches before substituting. See the full Hot Sauna swatch →
C2 Paint Equivalent of Constellation Blue
C2 Paint has no exact twin of Constellation Blue. The nearest is Cordon Bleu (C2-774) at ΔE 4.53 — close, but the difference shows next to trim and in side light. It sits at the same lightness (LRV 7 vs 7). Compare large swatches before substituting. See the full Cordon Bleu swatch →
Magnolia Home Equivalent of Constellation Blue
Magnolia Home doesn't make a true equivalent of Constellation Blue — the nearest deck color, Silos District (JG-92), is clearly different (ΔE 5.99). For an exact match, any Magnolia Home retailer can custom-tint Behr T18-18 instead. See the full Silos District swatch →
Backdrop Equivalent of Constellation Blue
Backdrop doesn't make a true equivalent of Constellation Blue — the nearest deck color, Last Call (BD-LC), is clearly different (ΔE 7.34). For an exact match, any Backdrop retailer can custom-tint Behr T18-18 instead. See the full Last Call swatch →
Farrow & Ball Equivalent of Constellation Blue
Farrow & Ball doesn't make a true equivalent of Constellation Blue — the nearest deck color, Hague Blue (NO. 30), is clearly different (ΔE 13.13). For an exact match, any Farrow & Ball retailer can custom-tint Behr T18-18 instead. See the full Hague Blue swatch →
Clare Equivalent of Constellation Blue
Clare doesn't make a true equivalent of Constellation Blue — the nearest deck color, Blackest (PNT100-DP-55), is clearly different (ΔE 16.43). For an exact match, any Clare retailer can custom-tint Behr T18-18 instead. See the full Blackest swatch →