Steel Symphony 4 vs Grey Blue
Steel Symphony 4 (Dulux) and Grey Blue (RAL Classic) come from different manufacturers. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. The 47-point LRV gap — 54 for Steel Symphony 4 vs 7 for Grey Blue — means Steel Symphony 4 will open up a space more effectively. A ΔE of 46.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Steel Symphony 4 vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Steel Symphony 4 on one side and Grey Blue 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 Steel Symphony 4 comparisons
See how Steel Symphony 4 stacks up against other well-photographed colors across different brands and tones.
