Mammoth Mountain vs RAL 620-4
Mammoth Mountain is a Behr color while RAL 620-4 comes from RAL Effect. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. At LRV 11 vs 9, Mammoth Mountain will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. At ΔE 7.2, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Mammoth Mountain vs RAL 620-4 in Real Spaces
4 real rooms side by side. Mammoth Mountain and RAL 620-4 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. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
Mammoth Mountain vs RAL 620-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Mammoth Mountain on one side and RAL 620-4 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 Mammoth Mountain comparisons
See how Mammoth Mountain stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 11), opening up a space where Mammoth Mountain encloses it.
At LRV 83 vs 11, White Dove is decisively the brighter choice.
A 6-point LRV gap (11 vs 6) makes Mammoth Mountain the marginally brighter of the two.
Purbeck Stone reflects far more light (LRV 52 vs 11), opening up a space where Mammoth Mountain encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 11), opening up a space where Mammoth Mountain encloses it.
At LRV 52 vs 11, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 11), opening up a space where Mammoth Mountain encloses it.
At LRV 58 vs 11, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 11, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 11), opening up a space where Mammoth Mountain encloses it.
Mammoth Mountain reads slightly lighter (LRV 11 vs 4), a gap that shows most in low-lit rooms.
At LRV 55 vs 11, Tranquil Dawn is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 13 vs 11), so neither reads brighter in a room.
At LRV 44 vs 11, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 11), opening up a space where Mammoth Mountain encloses it.
Artichoke reads slightly lighter (LRV 21 vs 11), a gap that shows most in low-lit rooms.
At LRV 66 vs 11, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 11, Shoji White is decisively the brighter choice.
At LRV 83 vs 11, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 11), opening up a space where Mammoth Mountain encloses it.
Their light reflectance is nearly identical (LRV 12 vs 11), so neither reads brighter in a room.
A 3-point LRV gap (11 vs 8) makes Mammoth Mountain the marginally brighter of the two.
At LRV 68 vs 11, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 11), opening up a space where Mammoth Mountain encloses it.
Their light reflectance is nearly identical (LRV 12 vs 11), so neither reads brighter in a room.
At LRV 45 vs 11, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 11), opening up a space where Mammoth Mountain encloses it.