Iron Mountain → Behr
The closest Behr matches for Benjamin Moore Iron Mountain (2134-30), ranked by perceptual color distance.
Finding a Behr Equivalent for Iron Mountain
If you love Benjamin Moore Iron Mountain but need a Behr alternative, you are not alone. This is one of the most common cross-brand paint matching searches, whether you are working with a painter who prefers Behr, your local store does not carry Benjamin Moore, or you simply want to compare prices across brands before committing.
Iron Mountain (2134-30) is a dark gray with warm charcoal-green undertones. A dark, warm gray with subtle green undertones. Lighter than Wrought Iron, darker than Chelsea Gray. A versatile dark neutral. To find a good Behr match, we need a color that captures not just the right depth (LRV 14.79) but also that specific undertone character. That is where Delta E color science comes in.
We calculated the perceptual color distance between Iron Mountain and every Behr color using the CIE2000 Delta E formula, which measures how different two colors look to the human eye. A Delta E under 2 means most people cannot tell the colors apart. Between 2 and 4, you might notice a difference in certain lighting. Above 5, the difference is clearly visible side by side.
Honestly, Behr does not have a perfect equivalent for Iron Mountain. The closest option is Dolphin Fin (PPU26-06) with a Delta E of 8.2, but at that distance the difference will be visible. Dolphin Fin is much lighter. No close dark Behr match in current database. If getting this exact color is critical, you may want to explore custom color matching at a Behr store.
Behr Matches for Iron Mountain
Dolphin Fin is much lighter. No close dark Behr match in current database.
| Iron Mountain | Dolphin Fin | |
|---|---|---|
| LRV | 14.79 | 46 |
| Hex | #767671 | #BAB5AE |
| Undertone | Warm Charcoal-Green | Warm Greige |
| Family | Gray | Gray |
Undertone Comparison
Iron Mountain has warm charcoal-green undertones. A dark, warm gray with subtle green undertones. Lighter than Wrought Iron, darker than Chelsea Gray. A versatile dark neutral.
Dolphin Fin has warm greige undertones. A warm medium gray with subtle beige undertones. Behr's answer to the greige trend. Balanced and versatile.
The undertone difference is worth paying attention to. While they are close in overall appearance, the different undertones mean they may diverge in certain lighting. Iron Mountain's warm charcoal-green quality may read differently than Dolphin Fin's warm greige character, especially in rooms with strong directional light or colored accents that could pull out one undertone more than the other. Test a sample in your specific room before committing.
How These Colors Behave in Different Lighting
Iron Mountain in Your Room
In bright light, the green lean is visible. In dim rooms, it reads as a solid dark gray. Works as a softer alternative to black.
Dolphin Fin in Your Room
Reads as a warm, balanced gray in most rooms. Neither too warm nor too cool. A safe, crowd-pleasing choice for any room.
LRV and Brightness
Iron Mountain has an LRV of 14.79, while Dolphin Fin has an LRV of 46. That means Dolphin Fin reflects more light. If you switch from Iron Mountain to Dolphin Fin, the room should feel slightly brighter and more open.
Best Rooms for Iron Mountain
Benjamin Moore recommends Iron Mountain for: accent wall, exterior, front door, cabinets, office. With an LRV of 14.79, this is a dark color that absorbs more light than it reflects. It makes a bold statement and works beautifully on accent walls, front doors, exterior trim, and features where drama is the goal. In a full room, make sure you have good lighting and bright white trim for contrast.
Dolphin Fin is recommended for: living room, bedroom, hallway, office, whole house. The recommended applications differ slightly between brands, but the color's properties should work in the same rooms regardless of which brand you choose. Trust the LRV and undertone data more than the specific room suggestions, and always test in your actual space.
Iron Mountain in Other Brands
Looking for Iron Mountain equivalents in other brands besides Behr? We have matches across all major paint brands.
Frequently Asked Questions
The closest Behr match for Iron Mountain (2134-30) is Dolphin Fin (PPU26-06) with a Delta E of 8.2, which rates as a "approximate" match. Dolphin Fin is much lighter. No close dark Behr match in current database. Delta E measures perceptual color distance on a scale where under 2 means nearly identical, 2 to 4 means close with subtle differences, and over 5 means clearly noticeable.
No, they are not identical. Iron Mountain is a Benjamin Moore color with warm charcoal-green undertones and an LRV of 14.79. Dolphin Fin is a Behr color with warm greige undertones and an LRV of 46. With a Delta E of 8.2, you will likely notice a difference, especially in bright or direct lighting. Paint formulations differ between brands, so even colors with similar values can look slightly different due to pigment concentration, binders, and finish.
With a Delta E of 8.2, the difference is enough that they should not be used on adjacent walls in the same room. You can use them in separate rooms of the same house, but be aware that walking from one room to the other may reveal the difference, especially if the rooms have similar lighting. For the most consistent look, pick one brand for all connected living spaces and reserve the other brand for visually separate rooms like bathrooms or bedrooms behind closed doors.
There are several practical reasons to look for a Behr equivalent. Price differences between brands can be significant on large projects. Availability matters if your nearest paint store or home center specializes in Behr. Some painters have strong preferences for one brand's formula based on coverage, dry time, or workability. And if you are touching up existing Behr work, matching within the same brand gives you the best consistency for seamless results.
Match calculations use Delta E (CIE2000) computed from Lab color space conversion. Color data sourced from manufacturer specifications. Last reviewed: March 22, 2026.