Thundercloud Gray vs Light grey
Thundercloud Gray (Benjamin Moore) and Light grey (RAL Classic) come from different manufacturers. Hue-wise, Thundercloud Gray belongs to the blue-grey family and Light grey to the grey family. The 8-point LRV gap — 58 for Light grey vs 50 for Thundercloud Gray — means Light grey will open up a space more effectively. ΔE 5.0 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Thundercloud Gray vs Light grey in Real Spaces
1 real room side by side. Thundercloud Gray and Light grey 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
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Light grey returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Thundercloud Gray vs Light grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Thundercloud Gray on one side and Light grey 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.
