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.
A 6-point LRV gap (69 vs 63) makes Ammonite the marginally brighter of the two.
White Dove reflects far more light (LRV 83 vs 63), opening up a space where Steel Symphony 5 encloses it.
Steel Symphony 5 reflects far more light (LRV 63 vs 6), opening up a space where Iron Ore encloses it.
A 11-point LRV gap (63 vs 52) makes Steel Symphony 5 the marginally brighter of the two.
At LRV 63 vs 30, Steel Symphony 5 is decisively the brighter choice.
Steel Symphony 5 reads slightly lighter (LRV 63 vs 52), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 63 vs 60), so neither reads brighter in a room.
Steel Symphony 5 reads slightly lighter (LRV 63 vs 58), a gap that shows most in low-lit rooms.
Steel Symphony 5 reflects far more light (LRV 63 vs 27), opening up a space where Denim Drift encloses it.
At LRV 63 vs 43, Steel Symphony 5 is decisively the brighter choice.
At LRV 63 vs 4, Steel Symphony 5 is decisively the brighter choice.
Steel Symphony 5 reads slightly lighter (LRV 63 vs 55), a gap that shows most in low-lit rooms.
Steel Symphony 5 reflects far more light (LRV 63 vs 13), opening up a space where Bancha encloses it.
Steel Symphony 5 reflects far more light (LRV 63 vs 44), opening up a space where Hardwick White encloses it.
At LRV 84 vs 63, Pure White is decisively the brighter choice.
At LRV 63 vs 21, Steel Symphony 5 is decisively the brighter choice.
With LRVs of 66 and 63, the two reflect almost the same amount of light.
Shoji White reads slightly lighter (LRV 74 vs 63), a gap that shows most in low-lit rooms.
Snowbound reflects far more light (LRV 83 vs 63), opening up a space where Steel Symphony 5 encloses it.
At LRV 63 vs 51, Steel Symphony 5 is decisively the brighter choice.
Steel Symphony 5 reflects far more light (LRV 63 vs 12), opening up a space where Pewter Green encloses it.
Steel Symphony 5 reflects far more light (LRV 63 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reads slightly lighter (LRV 68 vs 63), a gap that shows most in low-lit rooms.
At LRV 63 vs 41, Steel Symphony 5 is decisively the brighter choice.
Steel Symphony 5 reflects far more light (LRV 63 vs 12), opening up a space where Vintage Vogue encloses it.
Steel Symphony 5 reflects far more light (LRV 63 vs 45), opening up a space where Saybrook Sage encloses it.
At LRV 63 vs 31, Steel Symphony 5 is decisively the brighter choice.