RAL 820-4 vs Rockweed
RAL 820-4 is a RAL Effect color while Rockweed comes from Sherwin-Williams. Hue-wise, RAL 820-4 belongs to the blue-grey family and Rockweed to the grey family. At LRV 23 vs 4, RAL 820-4 will read as the brighter of the two — a 19-point gap that matters most in north-facing or low-light rooms. At ΔE NaN, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
RAL 820-4 vs Rockweed Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 820-4 on one side and Rockweed 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 820-4 comparisons
See how RAL 820-4 stacks up against other well-photographed colors across different brands and tones.
