RAL 210-4 vs Blue Horizon
RAL 210-4 (RAL Effect) and Blue Horizon (Sherwin-Williams) come from different manufacturers. These are both blues, so the question isn't which hue to choose — it's where within blue to land. The 3-point LRV gap — 78 for Blue Horizon vs 75 for RAL 210-4 — means Blue Horizon will open up a space more effectively. A ΔE of 1.2 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. 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 210-4 vs Blue Horizon Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 210-4 on one side and Blue Horizon 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 210-4 comparisons
See how RAL 210-4 stacks up against other well-photographed colors across different brands and tones.
