Paint Color Lab Iron Mountain BM 2134-30
Benjamin Moore Iron Mountain (2134-30) has an LRV of 10.96 and a very close match in Sherwin-Williams Peppercorn (SW 7674).
- LRV
- 10.96light reflectance, 0–100
- Undertone
- Neutralcalculated from Lab
- Hex
- #575553
- RGB
- 87, 85, 83
- CIE Lab
- 36.3 / 0.4 / 1.4D65, from hex
- Depth
- Dark
Closest matches to Iron Mountain in other brands
Ranked by CIEDE2000 colour difference (ΔE). Under 1 is near-identical; under 2 is hard to tell apart on a wall.
| Color | Brand | LRV | ΔE 2000 | How close |
|---|---|---|---|---|
| Peppercorn SW 7674 | Sherwin-Williams | 10 | 1.8 | very close |
| Urbane Bronze SW 7048 | Sherwin-Williams | 8 | 2.9 | close, visible side by side |
| Knight's Armor PPG 1001-6 | PPG | 11 | 3.3 | close, visible side by side |
| Black Magic PPG 1001-7 | PPG | 4 | 7.3 | same family only |
| Midnight Blue Behr N480-7 | Behr | 9 | 7.4 | same family only |
| Flora Valspar 5004-2C | Valspar | 9.3 | 7.8 | same family only |
| Almost Charcoal Valspar 4008-2B | Valspar | 15.93 | 10.3 | same family only |
| Adirondack Blue Behr N480-5 | Behr | 23 | 19.7 | same family only |
Matches come from the 190 colors in our database so far, not from every color each brand makes. Try the color matcher for any hex code.
Iron Mountain on a wall
About Iron Mountain
Iron Mountain LRV and undertone
Benjamin Moore Iron Mountain (2134-30) has an LRV of 10.96, placing it in the dark color depth range. Its color family is gray, and its calculated undertone is neutral. Light reflectance value describes how much visible light a painted surface reflects. At this level, Iron Mountain reflects relatively little light and can appear much darker than pale gray or white finishes. Its neutral classification provides a reference when comparing it with colors that have stronger warm or cool undertones. However, surrounding finishes and natural light can still influence how gray appears. In a room with limited daylight, consider using a lighter ceiling or trim to establish contrast. Sample the paint on different walls because the direction and intensity of daylight can change its appearance.
Iron Mountain in other brands
Sherwin-Williams Peppercorn (SW 7674) is the closest listed cross-brand match, with an LRV of 10.0 and a ΔE of 1.8. A ΔE between 1 and 2 means the colors are very close, although side-by-side samples may reveal differences. Sherwin-Williams Urbane Bronze (SW 7048) has an LRV of 8.0 and a ΔE of 2.9, making it a close but visibly different option. PPG Knight’s Armor (PPG1001-6) has an LRV of 11.0 and a ΔE of 3.3. It also falls within the close-match range. PPG Black Magic (PPG1001-7) has a lower LRV of 4.0 and a ΔE of 7.3, so it is only similar. These comparisons distinguish near matches from colors that share a general dark appearance but differ more noticeably.
Lighter and darker Benjamin Moore alternatives
Benjamin Moore Wrought Iron (2124-10) has an LRV of 8.17, making it darker than Iron Mountain. Its ΔE of 4.6 also indicates a visible difference beyond a close match. It can suit a space where lower light reflection is desired. Benjamin Moore Kendall Charcoal (HC-166) has an LRV of 14.61, making it lighter, with a ΔE of 6.2. Consider it when a dark gray needs to reflect more light. Benjamin Moore Hale Navy (HC-154) has an LRV of 8.36, slightly below Iron Mountain’s lightness level, and a ΔE of 8.8. Benjamin Moore Newburyport Blue (HC-155) has an LRV of 10.31 and a ΔE of 10.9. Compare samples under the room’s actual lighting before choosing between these dark alternatives.
Before you buy, compare a physical sample with the swatch on Benjamin Moore’s page for Iron Mountain.
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Hex, RGB and LRV (LRV published; RGB read from the on-screen swatch) from Benjamin Moore's page for this color, checked October 24, 2026. Lab, undertone and ΔE are our calculations. Not affiliated with Benjamin Moore. See how we measure colors.