Thundercloud Gray vs Black grey
Where Thundercloud Gray belongs to Benjamin Moore's range, Black grey is a RAL Classic color. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. Thundercloud Gray (LRV 50) reflects noticeably more light than Black grey (LRV 6), a difference of 44 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 55.7, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Thundercloud Gray vs Black grey in Real Spaces
1 real room side by side. Seeing Thundercloud Gray and Black grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Thundercloud Gray reflects noticeably more light off the walls, making the space read more open than Black grey.
Color Details
Thundercloud Gray vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Thundercloud Gray on one side and Black 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.
