Thundercloud Gray vs Agreeable Gray
Where Thundercloud Gray belongs to Benjamin Moore's range, Agreeable Gray is a Sherwin-Williams color. Hue-wise, Thundercloud Gray belongs to the blue-grey family and Agreeable Gray to the greige-grey family. Agreeable Gray (LRV 60) reflects noticeably more light than Thundercloud Gray (LRV 50), a difference of 10 points that becomes especially apparent in rooms with limited natural light. Thundercloud Gray runs blue while Agreeable Gray is decidedly warm, which means they'll respond very differently to warm vs cool light sources. The ΔE 9.7 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Thundercloud Gray vs Agreeable Gray in Real Spaces
2 real rooms side by side. Thundercloud Gray and Agreeable Gray are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Thundercloud Gray.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Thundercloud Gray.
Color Details
Thundercloud Gray vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Thundercloud Gray on one side and Agreeable Gray on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Thundercloud Gray comparisons
See how Thundercloud Gray stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 50), opening up a space where Thundercloud Gray encloses it.
At LRV 69 vs 50, Ammonite is decisively the brighter choice.
Thundercloud Gray reflects far more light (LRV 50 vs 6), opening up a space where Iron Ore encloses it.
Their light reflectance is nearly identical (LRV 52 vs 50), so neither reads brighter in a room.
At LRV 50 vs 30, Thundercloud Gray is decisively the brighter choice.
With LRVs of 52 and 50, the two reflect almost the same amount of light.
Accessible Beige reads slightly lighter (LRV 58 vs 50), a gap that shows most in low-lit rooms.
Thundercloud Gray reflects far more light (LRV 50 vs 27), opening up a space where Denim Drift encloses it.
A 7-point LRV gap (50 vs 43) makes Thundercloud Gray the marginally brighter of the two.
At LRV 50 vs 4, Thundercloud Gray is decisively the brighter choice.
Tranquil Dawn reads slightly lighter (LRV 55 vs 50), a gap that shows most in low-lit rooms.
Thundercloud Gray reflects far more light (LRV 50 vs 13), opening up a space where Bancha encloses it.
Thundercloud Gray reads slightly lighter (LRV 50 vs 44), a gap that shows most in low-lit rooms.
At LRV 84 vs 50, Pure White is decisively the brighter choice.
At LRV 50 vs 21, Thundercloud Gray is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 50), opening up a space where Thundercloud Gray encloses it.
Shoji White reflects far more light (LRV 74 vs 50), opening up a space where Thundercloud Gray encloses it.
Snowbound reflects far more light (LRV 83 vs 50), opening up a space where Thundercloud Gray encloses it.
Thundercloud Gray reflects far more light (LRV 50 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 50), opening up a space where Thundercloud Gray encloses it.
A 9-point LRV gap (50 vs 41) makes Thundercloud Gray the marginally brighter of the two.
At LRV 68 vs 50, Calamine is decisively the brighter choice.
At LRV 50 vs 25, Thundercloud Gray is decisively the brighter choice.
Thundercloud Gray reflects far more light (LRV 50 vs 12), opening up a space where Vintage Vogue encloses it.
Thundercloud Gray reads slightly lighter (LRV 50 vs 45), a gap that shows most in low-lit rooms.
At LRV 50 vs 31, Thundercloud Gray is decisively the brighter choice.
At LRV 50 vs 7, Thundercloud Gray is decisively the brighter choice.
At LRV 50 vs 24, Thundercloud Gray is decisively the brighter choice.
A 7-point LRV gap (57 vs 50) makes Guilford Green the marginally brighter of the two.
At LRV 72 vs 50, Just Walnut is decisively the brighter choice.