Iron Mountain vs Tar
Where Iron Mountain belongs to Benjamin Moore's range, Tar is a Farrow & Ball color. These are both greys, so the question isn't which hue to choose — it's where within grey to land. They have nearly identical light reflectance values (11 vs 9), so they'll read as similarly Dark in most lighting conditions. Iron Mountain runs red while Tar is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. At ΔE 1.8, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. 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 Tar Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron Mountain on one side and Tar 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.
