RAL 640-M vs Piazza
RAL 640-M (RAL Effect) and Piazza (Tikkurila) come from different manufacturers. Hue-wise, RAL 640-M belongs to the blue family and Piazza to the beige-greige family. The 60-point LRV gap — 65 for Piazza vs 5 for RAL 640-M — means Piazza will open up a space more effectively. A ΔE of 68.1 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
RAL 640-M vs Piazza in Real Spaces
1 real room side by side. Seeing RAL 640-M and Piazza in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Piazza returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
RAL 640-M vs Piazza Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 640-M 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 640-M comparisons
See how RAL 640-M stacks up against other well-photographed colors across different brands and tones.
