Mountain Ash vs S 3005-G20Y
Mountain Ash is a Cloverdale Paint color while S 3005-G20Y comes from NCS. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. With LRVs of 40 and 40, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 2.3, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Mountain Ash vs S 3005-G20Y in Real Spaces
2 real rooms side by side. Mountain Ash and S 3005-G20Y 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.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Color Details
Mountain Ash vs S 3005-G20Y Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Ash on one side and S 3005-G20Y 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 Mountain Ash comparisons
See how Mountain Ash stacks up against other well-photographed colors across different brands and tones.
