Steel Symphony 1 vs Old Mill Blue
Steel Symphony 1 is a Dulux color while Old Mill Blue comes from PPG. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. With LRVs of 17 and 17, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 6.9, 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
Steel Symphony 1 vs Old Mill Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Steel Symphony 1 on one side and Old Mill 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 1 comparisons
See how Steel Symphony 1 stacks up against other well-photographed colors across different brands and tones.
