Sea Urchin 1 vs Obsidian Green
Where Sea Urchin 1 belongs to Dulux's range, Obsidian Green is a Little Greene color. Sea Urchin 1 reads as blue, while Obsidian Green reads as green — two distinct hue families, not close cousins. Sea Urchin 1 (LRV 19) reflects noticeably more light than Obsidian Green (LRV 1), a difference of 18 points that becomes especially apparent in rooms with limited natural light. Sea Urchin 1 runs cool while Obsidian Green is decidedly green, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 38.8, 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 1 vs Obsidian Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Sea Urchin 1 on one side and Obsidian Green 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 1 comparisons
See how Sea Urchin 1 stacks up against other well-photographed colors across different brands and tones.
