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Thunder Gray SW 7645
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: Subtle yellow undertone
In CIELAB, Thunder Gray sits at L* 35.5, a* 0.2, b* 4.7. Its hue angle is 87° and its chroma is 4.7, so it leans yellow only slightly — the undertone mostly shows next to whiter or grayer colors. It classifies as warm. Among Sherwin-Williams colors with a similar LRV (±5), it is warmer (more yellow) than 50%.
LRV 8.8: very dark
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 8.8, Thunder Gray is lighter than 10% of Sherwin-Williams colors. Near-black depth. Use on doors, trim, cabinetry, exteriors or moody rooms with strong artificial lighting.
Closest Benjamin Moore match to Thunder 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 | |
|---|---|---|---|---|
| Dragon's Breath | 1547 | 0.70 | Practically identical | |
| Tavern Charcoal | CW-90 | 2.87 | Close — difference visible side by side | |
| Iron Mountain | 2134-30 | 2.94 | Close — difference visible side by side |
Closest Behr match to Thunder 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 | |
|---|---|---|---|---|
| Black Bean | 790D-7 | 0.98 | Practically identical | |
| Dominant Gray | BXC-17 | 1.61 | Very close | |
| Peppery | MQ2-62 | 1.87 | Very close |
Similar Sherwin-Williams colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Stony Creek | SW 9610 | 1.16 | Very close | |
| Urbane Bronze | SW 7048 | 1.16 | Very close | |
| Prelude | SW 9620 | 1.28 | Very close | |
| Roycroft Bronze Green | SW 2846 | 2.38 | Close — difference visible side by side | |
| Nocturne | SW 9520 | 3.09 | Close — difference visible side by side | |
| Ironclad | SW 9570 | 3.33 | Close — difference visible side by side |
Lighter and darker versions
Colors from Sherwin-Williams with nearly the same hue and saturation, one step lighter or darker.
- Garden Gate SW 6167 · lighter, LRV 9.9
- Prospect SW 9615 · lighter, LRV 10.1
- Forged Steel SW 9565 · lighter, LRV 10.5
- Nocturne SW 9520 · darker, LRV 7.8
- Chateau Brown SW 7510 · darker, LRV 7.6
- Enduring Bronze SW 7055 · darker, LRV 7.5
Colors that go with Thunder Gray
Sherwin-Williams's own coordinating colors for Thunder Gray:
- Nuance SW 7049
- Analytical Gray SW 7051
- Origami White SW 7636
Color-theory pairings — the nearest Sherwin-Williams color to each rotated hue, keeping the same lightness and saturation:
- Mineral Gray SW 2740 · complementary (180°)
- Metropolis SW 9575 · analogous (−30°)
- Shade-Grown SW 6188 · analogous (+30°)
- Tarragon SW 9660 · triadic (120°)
- Midnight SW 6264 · triadic (240°)
Thunder Gray vs popular colors
- Urbane Bronze (Sherwin-Williams SW 7048, ΔE 1.2) is about as light.
- Iron Mountain (Benjamin Moore 2134-30, ΔE 2.9) is lighter (LRV 11.0 vs 8.8), more blue/cool, more muted.
- Peppercorn (Sherwin-Williams SW 7674, ΔE 4.5) is about as light, more blue/cool, more muted.