Mountain Pass vs Rocky River
Both are Sherwin-Williams colors. Mountain Pass reads as blue-grey, while Rocky River reads as blue-green — two distinct hue families, not close cousins. With LRVs of 14 and 15, they'll behave almost identically in terms of how much light they reflect back into a room. The tonal difference — Mountain Pass's neutral character against Rocky River's cool — becomes most visible against white trim or in morning light. At ΔE 4.4, 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.
Mountain Pass vs Rocky River in Real Spaces
1 real room side by side. Mountain Pass and Rocky River 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. Mountain Pass reads more restrained here, while Rocky River adds a sense of enclosure and warmth.
Color Details
Mountain Pass vs Rocky River Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Pass on one side and Rocky River 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 Pass comparisons
See how Mountain Pass stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 14), opening up a space where Mountain Pass encloses it.
At LRV 69 vs 14, Ammonite is decisively the brighter choice.
Mountain Pass reads slightly lighter (LRV 14 vs 6), a gap that shows most in low-lit rooms.
At LRV 52 vs 14, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 14, Evergreen Fog is decisively the brighter choice.
Mizzle reflects far more light (LRV 52 vs 14), opening up a space where Mountain Pass encloses it.
At LRV 60 vs 14, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 14), opening up a space where Mountain Pass encloses it.
Denim Drift reflects far more light (LRV 27 vs 14), opening up a space where Mountain Pass encloses it.
At LRV 43 vs 14, French Gray is decisively the brighter choice.
A 9-point LRV gap (14 vs 4) makes Mountain Pass the marginally brighter of the two.
Tranquil Dawn reflects far more light (LRV 55 vs 14), opening up a space where Mountain Pass encloses it.
With LRVs of 14 and 13, the two reflect almost the same amount of light.
Hardwick White reflects far more light (LRV 44 vs 14), opening up a space where Mountain Pass encloses it.
At LRV 84 vs 14, Pure White is decisively the brighter choice.
A 8-point LRV gap (21 vs 14) makes Artichoke the marginally brighter of the two.
Balboa Mist reflects far more light (LRV 66 vs 14), opening up a space where Mountain Pass encloses it.
Shoji White reflects far more light (LRV 74 vs 14), opening up a space where Mountain Pass encloses it.
Snowbound reflects far more light (LRV 83 vs 14), opening up a space where Mountain Pass encloses it.
With LRVs of 14 and 12, the two reflect almost the same amount of light.
Skimming Stone reflects far more light (LRV 68 vs 14), opening up a space where Mountain Pass encloses it.
At LRV 41 vs 14, Dix Blue is decisively the brighter choice.
At LRV 68 vs 14, Calamine is decisively the brighter choice.
A 11-point LRV gap (25 vs 14) makes Treron the marginally brighter of the two.
With LRVs of 14 and 12, the two reflect almost the same amount of light.
Saybrook Sage reflects far more light (LRV 45 vs 14), opening up a space where Mountain Pass encloses it.
At LRV 31 vs 14, Pale Green is decisively the brighter choice.
A 7-point LRV gap (14 vs 7) makes Mountain Pass the marginally brighter of the two.
A 11-point LRV gap (24 vs 14) makes Cement grey the marginally brighter of the two.
At LRV 57 vs 14, Guilford Green is decisively the brighter choice.