RAL 850-M vs Prelude
Where RAL 850-M belongs to RAL Effect's range, Prelude is a Sherwin-Williams color. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. They have nearly identical light reflectance values (12 vs 9), so they'll read as similarly Dark in most lighting conditions. The ΔE 3.6 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. 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 850-M vs Prelude Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 850-M on one side and Prelude 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 850-M comparisons
See how RAL 850-M stacks up against other well-photographed colors across different brands and tones.
