Mountain Air vs Pewter Green
Mountain Air and Pewter Green come from the same Sherwin-Williams collection. Mountain Air reads as blue-grey, while Pewter Green reads as green-grey — two distinct hue families, not close cousins. The 61-point LRV gap — 73 for Mountain Air vs 12 for Pewter Green — means Mountain Air will open up a space more effectively. Where Mountain Air leans cool, Pewter Green reads neutral — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 47.9 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.
Mountain Air vs Pewter Green in Real Spaces
1 real room side by side. Seeing Mountain Air and Pewter Green in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The LRV gap is large enough that Mountain Air will make the room feel meaningfully brighter than Pewter Green would.
Color Details
Mountain Air vs Pewter Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Air on one side and Pewter Green 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 Air comparisons
See how Mountain Air stacks up against other well-photographed colors across different brands and tones.
A 10-point LRV gap (83 vs 73) makes White Dove the marginally brighter of the two.
Mountain Air reads slightly lighter (LRV 73 vs 69), a gap that shows most in low-lit rooms.
At LRV 73 vs 6, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 73 vs 52), opening up a space where Purbeck Stone encloses it.
Mountain Air reflects far more light (LRV 73 vs 30), opening up a space where Evergreen Fog encloses it.
At LRV 73 vs 52, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 73 vs 60), opening up a space where Agreeable Gray encloses it.
At LRV 73 vs 58, Mountain Air is decisively the brighter choice.
At LRV 73 vs 27, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 73 vs 43), opening up a space where French Gray encloses it.
Mountain Air reflects far more light (LRV 73 vs 4), opening up a space where Naval encloses it.
At LRV 73 vs 55, Mountain Air is decisively the brighter choice.
At LRV 73 vs 13, Mountain Air is decisively the brighter choice.
At LRV 73 vs 44, Mountain Air is decisively the brighter choice.
Pure White reads slightly lighter (LRV 84 vs 73), a gap that shows most in low-lit rooms.
Mountain Air reflects far more light (LRV 73 vs 21), opening up a space where Artichoke encloses it.
A 8-point LRV gap (73 vs 66) makes Mountain Air the marginally brighter of the two.
Their light reflectance is nearly identical (LRV 74 vs 73), so neither reads brighter in a room.
A 10-point LRV gap (83 vs 73) makes Snowbound the marginally brighter of the two.
A 5-point LRV gap (73 vs 68) makes Mountain Air the marginally brighter of the two.
Mountain Air reflects far more light (LRV 73 vs 41), opening up a space where Dix Blue encloses it.
Mountain Air reads slightly lighter (LRV 73 vs 68), a gap that shows most in low-lit rooms.
Mountain Air reflects far more light (LRV 73 vs 25), opening up a space where Treron encloses it.
At LRV 73 vs 12, Mountain Air is decisively the brighter choice.
At LRV 73 vs 45, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 73 vs 31), opening up a space where Pale Green encloses it.
Mountain Air reflects far more light (LRV 73 vs 7), opening up a space where Pine Needle encloses it.
Mountain Air reflects far more light (LRV 73 vs 24), opening up a space where Cement grey encloses it.
Mountain Air reflects far more light (LRV 73 vs 57), opening up a space where Guilford Green encloses it.
With LRVs of 73 and 72, the two reflect almost the same amount of light.