RAL 840-4 vs Solitary Slate
RAL 840-4 is a RAL Effect color while Solitary Slate comes from Sherwin-Williams. RAL 840-4 reads as grey, while Solitary Slate reads as greige-grey — two distinct hue families, not close cousins. With LRVs of 21 and 19, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 4.1, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. 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 840-4 vs Solitary Slate Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 840-4 on one side and Solitary Slate 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 840-4 comparisons
See how RAL 840-4 stacks up against other well-photographed colors across different brands and tones.
