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Thundercloud Gray 2124-40
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: Subtle blue undertone
In CIELAB, Thundercloud Gray sits at L* 76.3, a* -1.2, b* -2.1. Its hue angle is 241° and its chroma is 2.4, so it leans blue only slightly — the undertone mostly shows next to whiter or grayer colors. It classifies as cool. Among Benjamin Moore colors with a similar LRV (±5), it is warmer (more yellow) than 21%.
LRV 50.2: light
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 50.2, Thundercloud Gray is lighter than 55% of Benjamin Moore colors. The most forgiving range for whole-house walls. Keeps rooms bright without glare.
Closest Sherwin-Williams match to Thundercloud Gray
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Lazy Gray | SW 6254 | 1.48 | Very close | |
| Krypton | SW 6247 | 1.52 | Very close | |
| Samovar Silver | SW 6233 | 1.85 | Very close |
Closest Behr match to Thundercloud Gray
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color. Behr does not publish LRV, so Behr values here are estimates.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Skyline Steel | 750E-3 | 1.15 | Very close | |
| Distant Star | MQ5-31 | 1.52 | Very close | |
| French Silver | PPU18-5 | 1.60 | Very close |
Similar Benjamin Moore colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Gray Timber Wolf | 2126-50 | 1.50 | Very close | |
| Blue Springs | 1592 | 1.78 | Very close | |
| Eternity | AF-695 | 2.04 | Close — difference visible side by side | |
| Winter Solstice | 1605 | 2.41 | Close — difference visible side by side | |
| Silent Night | 1613 | 2.41 | Close — difference visible side by side | |
| Porringer Gray | 2121-40 | 2.82 | Close — difference visible side by side |
Lighter and darker versions
Colors from Benjamin Moore with nearly the same hue and saturation, one step lighter or darker.
- Wales Gray 1585 · lighter, LRV 53.5
- Blue Porcelain 1641 · lighter, LRV 54.9
- North Cascades 1411 · lighter, LRV 55.1
- Iced Marble 1578 · darker, LRV 47.2
- Imperial Gray 1571 · darker, LRV 46.8
- Manor Blue 1627 · darker, LRV 46.8
Colors that go with Thundercloud Gray
Thundercloud Gray is too close to neutral (chroma 2.4) for hue-based pairings to be meaningful; pair it with any color that shares its blue lean, and use a crisper white for trim.
Thundercloud Gray vs popular colors
- Coventry Gray (Benjamin Moore HC-169, ΔE 3.8) is darker (LRV 48.2 vs 50.2), more yellow/warm.
- Smoke (Benjamin Moore 2122-40, ΔE 4.9) is lighter (LRV 56.4 vs 50.2), more green, more saturated.
- Stonington Gray (Benjamin Moore HC-170, ΔE 6.0) is lighter (LRV 59.4 vs 50.2), more yellow/warm.