Mountain Air vs Renwick Heather
Both are Sherwin-Williams colors. Mountain Air reads as blue-grey, while Renwick Heather reads as grey — two distinct hue families, not close cousins. At LRV 73 vs 22, Mountain Air will read as the brighter of the two — a 52-point gap that matters most in north-facing or low-light rooms. The tonal difference — Mountain Air's cool character against Renwick Heather's neutral — becomes most visible against white trim or in morning light. At ΔE 36.0, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Mountain Air vs Renwick Heather in Real Spaces
1 real room side by side. Seeing Mountain Air and Renwick Heather 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 room light is typically the warmest in the house, which shifts both colors toward the red end of the spectrum compared to daylight. Mountain Air reflects noticeably more light off the walls, making the space read more open than Renwick Heather.
Color Details
Mountain Air vs Renwick Heather Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Air on one side and Renwick Heather 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.