Iron Mountain vs Denim Drift
Where Iron Mountain belongs to Benjamin Moore's range, Denim Drift is a Dulux color. Iron Mountain reads as grey, while Denim Drift reads as blue-grey — two distinct hue families, not close cousins. Denim Drift (LRV 27) reflects noticeably more light than Iron Mountain (LRV 11), a difference of 16 points that becomes especially apparent in rooms with limited natural light. Iron Mountain runs red while Denim Drift is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 23.2, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Iron Mountain vs Denim Drift Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron Mountain on one side and Denim Drift on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Iron Mountain comparisons
See how Iron Mountain stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 11, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 11), opening up a space where Iron Mountain encloses it.
A 5-point LRV gap (11 vs 6) makes Iron Mountain the marginally brighter of the two.
Purbeck Stone reflects far more light (LRV 52 vs 11), opening up a space where Iron Mountain encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 11), opening up a space where Iron Mountain encloses it.
At LRV 52 vs 11, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 11), opening up a space where Iron Mountain encloses it.
At LRV 58 vs 11, Accessible Beige is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 11), opening up a space where Iron Mountain encloses it.
Iron Mountain reads slightly lighter (LRV 11 vs 4), a gap that shows most in low-lit rooms.
At LRV 55 vs 11, Tranquil Dawn is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 13 vs 11), so neither reads brighter in a room.
At LRV 44 vs 11, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 11), opening up a space where Iron Mountain encloses it.
Artichoke reads slightly lighter (LRV 21 vs 11), a gap that shows most in low-lit rooms.
At LRV 66 vs 11, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 11, Shoji White is decisively the brighter choice.
At LRV 83 vs 11, Snowbound is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 12 vs 11), so neither reads brighter in a room.
At LRV 68 vs 11, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 11), opening up a space where Iron Mountain encloses it.
Calamine reflects far more light (LRV 68 vs 11), opening up a space where Iron Mountain encloses it.
Treron reflects far more light (LRV 25 vs 11), opening up a space where Iron Mountain encloses it.
Their light reflectance is nearly identical (LRV 12 vs 11), so neither reads brighter in a room.
At LRV 45 vs 11, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 11), opening up a space where Iron Mountain encloses it.
Iron Mountain reads slightly lighter (LRV 11 vs 7), a gap that shows most in low-lit rooms.
Cement grey reflects far more light (LRV 24 vs 11), opening up a space where Iron Mountain encloses it.
Guilford Green reflects far more light (LRV 57 vs 11), opening up a space where Iron Mountain encloses it.
Just Walnut reflects far more light (LRV 72 vs 11), opening up a space where Iron Mountain encloses it.