Mountain Air vs Rainsong
Mountain Air and Rainsong come from the same Sherwin-Williams collection. Hue-wise, Mountain Air belongs to the blue-grey family and Rainsong to the blue family. The 5-point LRV gap — 78 for Rainsong vs 73 for Mountain Air — means Rainsong will open up a space more effectively. Both share a cool character, which means they'll respond to light and surrounding materials in similar ways. A ΔE of 2.1 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Mountain Air vs Rainsong in Real Spaces
1 real room side by side. Mountain Air and Rainsong 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.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The brightness difference is modest but present — Rainsong gives the walls a little more lift.
Color Details
Mountain Air vs Rainsong Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Air on one side and Rainsong 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.