Sea Urchin 2 vs Tranquil Dawn
Both from Dulux's palette. Hue-wise, Sea Urchin 2 belongs to the blue-grey family and Tranquil Dawn to the green-grey family. Tranquil Dawn (LRV 55) reflects noticeably more light than Sea Urchin 2 (LRV 28), a difference of 27 points that becomes especially apparent in rooms with limited natural light. Sea Urchin 2 runs cool while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 21.8, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Sea Urchin 2 vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Sea Urchin 2 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 Sea Urchin 2 comparisons
See how Sea Urchin 2 stacks up against other well-photographed colors across different brands and tones.
