Thunder vs S 2502-Y20R
Thunder is a Benjamin Moore color while S 2502-Y20R comes from NCS. These are both greige-greys, so the question isn't which hue to choose — it's where within greige-grey to land. At LRV 53 vs 48, S 2502-Y20R will read as the brighter of the two — a 6-point gap that matters most in north-facing or low-light rooms. The tonal difference — Thunder's red character against S 2502-Y20R's warm — becomes most visible against white trim or in morning light. At ΔE 3.7, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Thunder vs S 2502-Y20R in Real Spaces
1 real room side by side. Thunder and S 2502-Y20R 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.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The brightness difference is modest but present — S 2502-Y20R gives the walls a little more lift.
Color Details
Thunder vs S 2502-Y20R Simulated Comparison
5 simulated room previews — drag the slider on each to see Thunder on one side and S 2502-Y20R 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 Thunder comparisons
See how Thunder stacks up against other well-photographed colors across different brands and tones.
