Iron Mountain vs French Gray
Iron Mountain is a Behr color while French Gray comes from Farrow & Ball. Iron Mountain reads as grey, while French Gray reads as beige-greige — two distinct hue families, not close cousins. At LRV 43 vs 18, French Gray will read as the brighter of the two — a 25-point gap that matters most in north-facing or low-light rooms. The tonal difference — Iron Mountain's yellow character against French Gray's warm — becomes most visible against white trim or in morning light. At ΔE 25.7, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Iron Mountain vs French Gray in Real Spaces
1 real room side by side. Seeing Iron Mountain and French Gray in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. French Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Iron Mountain vs French Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron Mountain on one side and French Gray 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.
White Dove reflects far more light (LRV 83 vs 18), opening up a space where Iron Mountain encloses it.
At LRV 69 vs 18, Ammonite is decisively the brighter choice.
Iron Mountain reflects far more light (LRV 18 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 18, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 18, Evergreen Fog is decisively the brighter choice.
Mizzle reflects far more light (LRV 52 vs 18), opening up a space where Iron Mountain encloses it.
At LRV 60 vs 18, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 18), opening up a space where Iron Mountain encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 18), a gap that shows most in low-lit rooms.
At LRV 18 vs 4, Iron Mountain is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 18), opening up a space where Iron Mountain encloses it.
Iron Mountain reads slightly lighter (LRV 18 vs 13), a gap that shows most in low-lit rooms.
Hardwick White reflects far more light (LRV 44 vs 18), opening up a space where Iron Mountain encloses it.
At LRV 84 vs 18, Pure White is decisively the brighter choice.
A 4-point LRV gap (21 vs 18) makes Artichoke the marginally brighter of the two.
Balboa Mist reflects far more light (LRV 66 vs 18), opening up a space where Iron Mountain encloses it.
Shoji White reflects far more light (LRV 74 vs 18), opening up a space where Iron Mountain encloses it.
Snowbound reflects far more light (LRV 83 vs 18), opening up a space where Iron Mountain encloses it.
Iron Mountain reads slightly lighter (LRV 18 vs 12), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 18), opening up a space where Iron Mountain encloses it.
At LRV 41 vs 18, Dix Blue is decisively the brighter choice.
At LRV 68 vs 18, Calamine is decisively the brighter choice.
A 7-point LRV gap (25 vs 18) makes Treron the marginally brighter of the two.
Iron Mountain reads slightly lighter (LRV 18 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 18), opening up a space where Iron Mountain encloses it.
At LRV 31 vs 18, Pale Green is decisively the brighter choice.
A 11-point LRV gap (18 vs 7) makes Iron Mountain the marginally brighter of the two.
A 6-point LRV gap (24 vs 18) makes Cement grey the marginally brighter of the two.
At LRV 57 vs 18, Guilford Green is decisively the brighter choice.
At LRV 72 vs 18, Just Walnut is decisively the brighter choice.