Dunn-Edwards Iron Mountain#5C5C5A · LRV 11
Why this color. The DE charcoal of choice for fences, doors, and modern exteriors.
Iron Mountain reads as a true neutral (no measurable hue) — dark — high drama, needs strong daylight or warm bulbs. The notes below cover the spec, what Dunn-Edwards DET637 actually looks like under different light, and the closest matches at competing US brands.
Color spec
| Brand | Dunn-Edwards |
| Name | Iron Mountain |
| SKU | DET637 |
| Hex | #5C5C5A |
| RGB | 92, 92, 90 |
| HSL | 60°, 1%, 36% |
| LRV | 11 |
| Undertone | true neutral (no measurable hue) |
| Family | Gray |
Kompozit alternative
The closest hex in the Kompozit deck, ranked by ΔE2000 (perceptual color difference). ΔE under 2 is indistinguishable to most eyes; under 5 is a very close visual match.
Closest matches at every US brand
9 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 gray from that brand.
Behr
PPG / Glidden
Magnolia Home
Sherwin-Williams
Benjamin Moore
Valspar
Farrow & Ball
Clare
Coordinated palette
Generated by hue-rotating #5C5C5A in HSL space. Pair Iron Mountain 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.