Mountain Air vs Cleanroom white
Where Mountain Air belongs to Dulux's range, Cleanroom white is a RAL Classic color. Hue-wise, Mountain Air belongs to the green-white family and Cleanroom white to the beige-white family. They have nearly identical light reflectance values (88 vs 89), so they'll read as similarly Light in most lighting conditions. The ΔE 4.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Mountain Air vs Cleanroom white in Real Spaces
1 real room side by side. Mountain Air and Cleanroom white 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.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Mountain Air vs Cleanroom white Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Air on one side and Cleanroom white 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.
Mountain Air reflects far more light (LRV 88 vs 69), opening up a space where Ammonite encloses it.
A 5-point LRV gap (88 vs 83) makes Mountain Air the marginally brighter of the two.
At LRV 88 vs 6, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 88 vs 52), opening up a space where Purbeck Stone encloses it.
Mountain Air reflects far more light (LRV 88 vs 30), opening up a space where Evergreen Fog encloses it.
At LRV 88 vs 52, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 88 vs 60), opening up a space where Agreeable Gray encloses it.
At LRV 88 vs 58, Mountain Air is decisively the brighter choice.
At LRV 88 vs 27, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 88 vs 43), opening up a space where French Gray encloses it.
Mountain Air reflects far more light (LRV 88 vs 4), opening up a space where Naval encloses it.
At LRV 88 vs 55, Mountain Air is decisively the brighter choice.
At LRV 88 vs 13, Mountain Air is decisively the brighter choice.
At LRV 88 vs 44, Mountain Air is decisively the brighter choice.
Mountain Air reads slightly lighter (LRV 88 vs 84), a gap that shows most in low-lit rooms.
Mountain Air reflects far more light (LRV 88 vs 21), opening up a space where Artichoke encloses it.
At LRV 88 vs 66, Mountain Air is decisively the brighter choice.
At LRV 88 vs 74, Mountain Air is decisively the brighter choice.
A 5-point LRV gap (88 vs 83) makes Mountain Air the marginally brighter of the two.
Mountain Air reflects far more light (LRV 88 vs 51), opening up a space where Pigeon encloses it.
At LRV 88 vs 12, Mountain Air is decisively the brighter choice.
At LRV 88 vs 8, Mountain Air is decisively the brighter choice.
At LRV 88 vs 68, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 88 vs 41), opening up a space where Dix Blue encloses it.
At LRV 88 vs 12, Mountain Air is decisively the brighter choice.
At LRV 88 vs 45, Mountain Air is decisively the brighter choice.
Mountain Air reflects far more light (LRV 88 vs 31), opening up a space where Pale Green encloses it.