Lavender Wash vs Thundercloud Gray paint color comparison

Lavender Wash vs Thundercloud Gray

Lavender Wash and Thundercloud Gray come from the same Benjamin Moore collection. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. The 15-point LRV gap — 65 for Lavender Wash vs 50 for Thundercloud Gray — means Lavender Wash will open up a space more effectively. Both share a blue character, which means they'll respond to light and surrounding materials in similar ways. ΔE 8.3 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.

Lavender Wash vs Thundercloud Gray in Real Spaces

1 real room side by side. Lavender Wash and Thundercloud 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

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. Lavender Wash returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.

Lavender WashBm Lavender Wash Bathroom

@rowhousereno

Thundercloud Gray2124-40 Bathroom

@mudpielullaby

Color Details

Lavender Wash
Benjamin Moore · CSP-515
LRV64.8
BrandBenjamin Moore
NumberCSP-515
UndertoneBlue
TemperatureCool
BrightnessLight
Thundercloud Gray
Benjamin Moore · 2124-40
LRV50.2
BrandBenjamin Moore
Number2124-40
UndertoneBlue
TemperatureNeutral
BrightnessMedium

Lavender Wash vs Thundercloud Gray Simulated Comparison

5 simulated room previews — drag the slider on each to see Lavender Wash on one side and Thundercloud Gray on the other.

Bathroom
Bedroom
House
Kitchen Cabinets
Living Room

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.