Blue Grotto vs Thunder
Blue Grotto and Thunder come from the same Benjamin Moore collection. Blue Grotto reads as blue, while Thunder reads as greige-grey — two distinct hue families, not close cousins. The 41-point LRV gap — 48 for Thunder vs 6 for Blue Grotto — means Thunder will open up a space more effectively. Where Blue Grotto leans blue, Thunder reads red — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 59.6 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Blue Grotto vs Thunder in Real Spaces
1 real room side by side. Seeing Blue Grotto and Thunder in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Thunder reflects noticeably more light off the walls, making the space read more open than Blue Grotto.
Color Details
Blue Grotto vs Thunder Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Grotto on one side and Thunder 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.