RAL 840-2 vs Piazza
RAL 840-2 (RAL Effect) and Piazza (Tikkurila) come from different manufacturers. RAL 840-2 reads as greige-grey, while Piazza reads as beige-greige — two distinct hue families, not close cousins. Their light reflectance values are nearly the same — 66 vs 65 — so neither will read significantly brighter or darker than the other. A ΔE of 1.4 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 840-2 vs Piazza in Real Spaces
2 real rooms side by side. RAL 840-2 and Piazza 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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Color Details
RAL 840-2 vs Piazza Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 840-2 on one side and Piazza 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 840-2 comparisons
See how RAL 840-2 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 66, White Dove is decisively the brighter choice.
RAL 840-2 reflects far more light (LRV 66 vs 52), opening up a space where Purbeck Stone encloses it.
RAL 840-2 reflects far more light (LRV 66 vs 30), opening up a space where Evergreen Fog encloses it.
RAL 840-2 reads slightly lighter (LRV 66 vs 60), a gap that shows most in low-lit rooms.
A 8-point LRV gap (66 vs 58) makes RAL 840-2 the marginally brighter of the two.
At LRV 66 vs 27, RAL 840-2 is decisively the brighter choice.
RAL 840-2 reflects far more light (LRV 66 vs 43), opening up a space where French Gray encloses it.
A 11-point LRV gap (66 vs 55) makes RAL 840-2 the marginally brighter of the two.
At LRV 66 vs 44, RAL 840-2 is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 66), opening up a space where RAL 840-2 encloses it.
Their light reflectance is nearly identical (LRV 66 vs 66), so neither reads brighter in a room.
A 8-point LRV gap (74 vs 66) makes Shoji White the marginally brighter of the two.
At LRV 66 vs 12, RAL 840-2 is decisively the brighter choice.
At LRV 66 vs 8, RAL 840-2 is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 68 vs 66), so neither reads brighter in a room.
At LRV 66 vs 12, RAL 840-2 is decisively the brighter choice.
At LRV 66 vs 45, RAL 840-2 is decisively the brighter choice.
RAL 840-2 reflects far more light (LRV 66 vs 31), opening up a space where Pale Green encloses it.