RAL 770-4 vs Zinc Luster
Where RAL 770-4 belongs to RAL Effect's range, Zinc Luster is a Sherwin-Williams color. These are both greige-greys, so the question isn't which hue to choose — it's where within greige-grey to land. Zinc Luster (LRV 23) reflects noticeably more light than RAL 770-4 (LRV 20), a difference of 4 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.6 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 770-4 vs Zinc Luster in Real Spaces
3 real rooms side by side. RAL 770-4 and Zinc Luster 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The brightness difference is modest but present — Zinc Luster gives the walls a little more lift.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Zinc Luster reads slightly lighter here — a subtle but real difference in how open the space feels.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Zinc Luster reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
RAL 770-4 vs Zinc Luster Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 770-4 on one side and Zinc Luster 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 770-4 comparisons
See how RAL 770-4 stacks up against other well-photographed colors across different brands and tones.
