RAL 840-3 vs Techno Gray
RAL 840-3 (RAL Effect) and Techno Gray (Sherwin-Williams) come from different manufacturers. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. The 3-point LRV gap — 49 for Techno Gray vs 46 for RAL 840-3 — means Techno Gray will open up a space more effectively. A ΔE of 2.6 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
RAL 840-3 vs Techno Gray in Real Spaces
1 real room side by side. RAL 840-3 and Techno Gray 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 Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Techno Gray has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
RAL 840-3 vs Techno Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 840-3 on one side and Techno Gray 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 RAL 840-3 comparisons
See how RAL 840-3 stacks up against other well-photographed colors across different brands and tones.
