Prussian Blue vs Tranquil Dawn
Where Prussian Blue belongs to Benjamin Moore's range, Tranquil Dawn is a Dulux color. Prussian Blue reads as blue, while Tranquil Dawn reads as green-grey — two distinct hue families, not close cousins. Tranquil Dawn (LRV 55) reflects noticeably more light than Prussian Blue (LRV 12), a difference of 43 points that becomes especially apparent in rooms with limited natural light. Prussian Blue runs blue while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 50.0, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Prussian Blue vs Tranquil Dawn in Real Spaces
1 real room side by side. Seeing Prussian Blue and Tranquil Dawn in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Tranquil Dawn will make the room feel meaningfully brighter than Prussian Blue would.
Color Details
Prussian Blue vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Prussian Blue on one side and Tranquil Dawn 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 Prussian Blue comparisons
See how Prussian Blue stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 12), opening up a space where Prussian Blue encloses it.
At LRV 83 vs 12, White Dove is decisively the brighter choice.
A 7-point LRV gap (12 vs 6) makes Prussian Blue the marginally brighter of the two.
Purbeck Stone reflects far more light (LRV 52 vs 12), opening up a space where Prussian Blue encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 12), opening up a space where Prussian Blue encloses it.
At LRV 52 vs 12, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 12), opening up a space where Prussian Blue encloses it.
At LRV 58 vs 12, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 12, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 12), opening up a space where Prussian Blue encloses it.
Prussian Blue reads slightly lighter (LRV 12 vs 4), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 13 vs 12), so neither reads brighter in a room.
At LRV 44 vs 12, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 12), opening up a space where Prussian Blue encloses it.
Artichoke reads slightly lighter (LRV 21 vs 12), a gap that shows most in low-lit rooms.
At LRV 66 vs 12, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 12, Shoji White is decisively the brighter choice.
At LRV 83 vs 12, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 12), opening up a space where Prussian Blue encloses it.
Their light reflectance is nearly identical (LRV 12 vs 12), so neither reads brighter in a room.
A 4-point LRV gap (12 vs 8) makes Prussian Blue the marginally brighter of the two.
At LRV 68 vs 12, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 12), opening up a space where Prussian Blue encloses it.
Their light reflectance is nearly identical (LRV 12 vs 12), so neither reads brighter in a room.
At LRV 45 vs 12, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 12), opening up a space where Prussian Blue encloses it.
Prussian Blue reads slightly lighter (LRV 12 vs 7), a gap that shows most in low-lit rooms.