Iron Mountain
Benjamin Moore
2134-30
Iron Mountain is a dark charcoal gray that stays impressively neutral, without the green or blue casts common at this depth. It works on exteriors, accent walls, built-ins, and doors when black is too much and mid-gray too little. It holds its color in changing light better than most dark grays, which makes it easy to specify confidently.
Some brands don't share official hex codes. The digital values shown here are careful approximations. Always confirm with a physical sample.
Close matches
Sherwin-Williams: Peppercorn SW 7674 (#585858) · Thunder Gray SW 7645 (#57534C) · Urbane Bronze SW 7048 (#54504A)
Farrow & Ball: Tar No. CC1 (#535353) · Hopper Head No. 305 (#505456) · Beetle Black No. G16 (#585C5D)
Similar Benjamin Moore colors: Gray 2121-10 (#585858) · Ambler Slate CW-685 (#57595A) · Silhouette AF-655 (#57504C)
Common questions
What is the hex code for Iron Mountain?
The hex code for Benjamin Moore Iron Mountain 2134-30 is #575553. In RGB that is 87, 85, 83. Use these values to reproduce Iron Mountain in SketchUp, Canva, Photoshop, Figma, or rendering software for client presentations and mood boards.
What is the Farrow & Ball equivalent of Iron Mountain?
The closest Farrow & Ball match for Iron Mountain is Tar No. CC1 (#535353). No cross-brand match is exact, because each brand mixes its own pigment formulas. Always confirm with a physical sample before specifying a substitute.
Is Iron Mountain warm or cool?
Iron Mountain is balanced, perhaps a hair warm, with a quiet brown-gray undertone and no obvious color cast. Its LRV is approximately 9, so it is a true dark that reads near-black in low light and rich charcoal in sun. Its neutrality is the practical advantage: it pairs with warm or cool whites without flashing an unexpected undertone, a rarity among charcoals.
Why does Iron Mountain look different on screen than on the wall?
Screens emit light while paint reflects it, so a hex code cannot capture how lighting, sheen, and surrounding colors shift paint in a real room. Treat #575553 as accurate for digital design work, and use physical samples for final approval.
What LRV does Iron Mountain have?
Iron Mountain has a Light Reflectance Value of approximately 9, meaning it reflects about 9% of visible light. That low value makes it a dramatic, light-absorbing choice that works well with strong natural light or as an accent.
Stop tab-hopping between brand sites.
Search 5,500+ colors from all three major brands in one place. Copy the exact values you need for SketchUp, Canva, or client mood boards, and find cross-brand matches in seconds.
