Sea Urchin 3 vs RAL 730-5
Where Sea Urchin 3 belongs to Dulux's range, RAL 730-5 is a RAL Effect color. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Sea Urchin 3 (LRV 40) reflects noticeably more light than RAL 730-5 (LRV 34), a difference of 6 points that becomes especially apparent in rooms with limited natural light. The ΔE 5.9 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Sea Urchin 3 vs RAL 730-5 in Real Spaces
1 real room side by side. Sea Urchin 3 and RAL 730-5 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 brightness difference is modest but present — Sea Urchin 3 gives the walls a little more lift.
Color Details
Sea Urchin 3 vs RAL 730-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Sea Urchin 3 on one side and RAL 730-5 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 3 comparisons
See how Sea Urchin 3 stacks up against other well-photographed colors across different brands and tones.
