Tranquil Dawn vs Celestial Blue
Where Tranquil Dawn belongs to Dulux's range, Celestial Blue is a Little Greene color. Hue-wise, Tranquil Dawn belongs to the green-grey family and Celestial Blue to the blue-green family. Tranquil Dawn (LRV 55) reflects noticeably more light than Celestial Blue (LRV 44), a difference of 11 points that becomes especially apparent in rooms with limited natural light. Tranquil Dawn runs neutral while Celestial Blue is decidedly green, which means they'll respond very differently to warm vs cool light sources. The ΔE 7.4 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Tranquil Dawn vs Celestial Blue in Real Spaces
2 real rooms side by side. Tranquil Dawn and Celestial Blue 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
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 Celestial Blue would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Celestial Blue.
Color Details
Tranquil Dawn vs Celestial Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Tranquil Dawn on one side and Celestial 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 Tranquil Dawn comparisons
See how Tranquil Dawn stacks up against other well-photographed colors across different brands and tones.
