Stone grey vs RAL 120-M
Where Stone grey belongs to RAL Classic's range, RAL 120-M is a RAL Effect color. These are both greys, so the question isn't which hue to choose — it's where within grey to land. Stone grey (LRV 29) reflects noticeably more light than RAL 120-M (LRV 27), a difference of 3 points that becomes especially apparent in rooms with limited natural light. At ΔE 1.9, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Stone grey vs RAL 120-M in Real Spaces
2 real rooms side by side. Stone grey and RAL 120-M 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.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Color Details
Stone grey vs RAL 120-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Stone grey on one side and RAL 120-M 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 Stone grey comparisons
See how Stone grey stacks up against other well-photographed colors across different brands and tones.
