Steel Symphony 5 vs Mild Blue
Where Steel Symphony 5 belongs to Dulux's range, Mild Blue is a Sherwin-Williams color. Hue-wise, Steel Symphony 5 belongs to the blue-grey family and Mild Blue to the blue family. They have nearly identical light reflectance values (63 vs 65), so they'll read as similarly Light in most lighting conditions. Both lean cool, so they'll behave similarly in mixed or changing light conditions. At ΔE 2.1, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished 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
Steel Symphony 5 vs Mild Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Steel Symphony 5 on one side and Mild 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 5 comparisons
See how Steel Symphony 5 stacks up against other well-photographed colors across different brands and tones.
