Color spec
| Brand | Dunn-Edwards |
| Name | Castlerock |
| SKU | DE6375 |
| Hex | #A9AAAB |
| RGB | 169, 170, 171 |
| HSL | 210°, 1%, 67% |
| LRV | 37 |
| Undertone | neutral with no strong undertone |
| Family | Gray |
About Dunn-Edwards Castlerock
Castlerock sits in the mid-range at LRV 37, so it shifts visibly through the day — lighter and more open in morning light, deeper and moodier after dark. Because it carries almost no measurable hue, it stays a true neutral and pairs cleanly with nearly any trim or floor. South-facing rooms will pull it lighter and warmer, while north light cools it down.
Castlerock is versatile enough for full rooms but has enough depth to anchor a space, so it suits living rooms, bedrooms and cabinetry alike. Grays like this read as a modern neutral and sit comfortably alongside both warm woods and cool metals.
Closest matches by brand
18 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 gray from that brand.
Sherwin-Williams
Behr
Benjamin Moore
Valspar
PPG / Glidden
Glidden
Dutch Boy
HGTV Home by Sherwin-Williams
Magnolia Home
Farrow & Ball
Diamond Vogel
Hirshfield's
Rodda
C2 Paint
Clare
Annie Sloan
Rust-Oleum
Kompozit
Similar Dunn-Edwards colors
closest in the Dunn-Edwards deckThe nearest shades to Castlerock within Dunn-Edwards'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 #A9AAAB in HSL space. Pair Castlerock 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.
Dunn-Edwards Castlerock Equivalents at Other Brands
Matching Castlerock 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 Dunn-Edwards DE6375 directly — these equivalents are for when you'd rather stay inside one brand's own deck.
Sherwin-Williams Equivalent of Castlerock
At Sherwin-Williams, the closest color to Castlerock is Mystical Shade (SW 6276) — very close at ΔE 3.15, though not an exact twin. It runs slightly lighter (LRV 40 vs 37) and carries a true neutral undertone; sample both side by side if the room gets strong natural light. See the full Mystical Shade swatch →
Behr Equivalent of Castlerock
At Behr, the closest color to Castlerock is Classy (MQ5-4) — very close at ΔE 2.18, though not an exact twin. It runs slightly lighter (LRV 40 vs 37) and carries a true neutral undertone; sample both side by side if the room gets strong natural light. See the full Classy swatch →
Benjamin Moore Equivalent of Castlerock
At Benjamin Moore, the closest color to Castlerock is Stormy Monday (2112-50) — very close at ΔE 2.2, though not an exact twin. It runs slightly lighter (LRV 41 vs 37) and carries a true neutral undertone; sample both side by side if the room gets strong natural light. See the full Stormy Monday swatch →
Valspar Equivalent of Castlerock
Valspar's nearest match is Metropolis (4005-1C), visually identical in normal room light (ΔE 1.13). It runs slightly lighter (LRV 41 vs 37) and carries a true neutral undertone, so it substitutes for Castlerock without repainting risk. See the full Metropolis swatch →
PPG / Glidden Equivalent of Castlerock
At PPG / Glidden, the closest color to Castlerock is Precipitation (PPG0997-4) — very close at ΔE 3, though not an exact twin. It runs slightly lighter (LRV 41 vs 37) and carries a true neutral undertone; sample both side by side if the room gets strong natural light. See the full Precipitation swatch →
Glidden Equivalent of Castlerock
At Glidden, the closest color to Castlerock is Philosophical Grey (50BG 39/022) — very close at ΔE 2.06, though not an exact twin. It runs slightly lighter (LRV 39 vs 37) and carries a true neutral undertone; sample both side by side if the room gets strong natural light. See the full Philosophical Grey swatch →
Dutch Boy Equivalent of Castlerock
At Dutch Boy, the closest color to Castlerock is Payphone (434-3DB) — very close at ΔE 3.39, though not an exact twin. It runs slightly lighter (LRV 41 vs 37) and carries a cool blue-green undertone; sample both side by side if the room gets strong natural light. See the full Payphone swatch →
HGTV Home by Sherwin-Williams Equivalent of Castlerock
At HGTV Home by Sherwin-Williams, the closest color to Castlerock is Steel Piling (HGSW 1475) — very close at ΔE 2.21, though not an exact twin. It runs slightly lighter (LRV 39 vs 37) and carries a true neutral undertone; sample both side by side if the room gets strong natural light. See the full Steel Piling swatch →
Magnolia Home Equivalent of Castlerock
Magnolia Home has no exact twin of Castlerock. The nearest is Vintage Collection (JG-99) at ΔE 3.66 — close, but the difference shows next to trim and in side light. It runs slightly lighter (LRV 41 vs 37). Compare large swatches before substituting. See the full Vintage Collection swatch →
Hirshfield's Equivalent of Castlerock
Hirshfield's's nearest match is Tin Man (0547), visually identical in normal room light (ΔE 1.87). It runs noticeably lighter (LRV 43 vs 37) and carries a true neutral undertone, so it substitutes for Castlerock without repainting risk. See the full Tin Man swatch →
Rodda Equivalent of Castlerock
At Rodda, the closest color to Castlerock is Ebb (R092) — very close at ΔE 2.96, though not an exact twin. It runs slightly lighter (LRV 42 vs 37) and carries a cool blue-green undertone; sample both side by side if the room gets strong natural light. See the full Ebb swatch →
C2 Paint Equivalent of Castlerock
C2 Paint's nearest match is Monday Morning (C2-987), visually identical in normal room light (ΔE 1.39). It runs slightly lighter (LRV 40 vs 37) and carries a true neutral undertone, so it substitutes for Castlerock without repainting risk. See the full Monday Morning swatch →
Kompozit Equivalent of Castlerock
Kompozit's nearest match is Tin Man (0547), visually identical in normal room light (ΔE 1.87). It runs slightly lighter (LRV 42 vs 37) and carries a true neutral undertone, so it substitutes for Castlerock without repainting risk. See the full Tin Man swatch →