Britannia Blue vs Steel Symphony 1
Britannia Blue is a Benjamin Moore color while Steel Symphony 1 comes from Dulux. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. With LRVs of 18 and 17, they'll behave almost identically in terms of how much light they reflect back into a room. The tonal difference — Britannia Blue's blue character against Steel Symphony 1's cool — becomes most visible against white trim or in morning light. With a ΔE of 2.1, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Britannia Blue vs Steel Symphony 1 in Real Spaces
2 real rooms side by side. Britannia Blue and Steel Symphony 1 are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Dining Room
Dining room light is typically the warmest in the house, which shifts both colors toward the red end of the spectrum compared to daylight. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Color Details
Britannia Blue vs Steel Symphony 1 Simulated Comparison
5 simulated room previews — drag the slider on each to see Britannia Blue on one side and Steel Symphony 1 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 Britannia Blue comparisons
See how Britannia Blue stacks up against other well-photographed colors across different brands and tones.
