Covington Blue vs Sea Urchin 3
Covington Blue is a Benjamin Moore color while Sea Urchin 3 comes from Dulux. Covington Blue reads as blue-green, while Sea Urchin 3 reads as blue — two distinct hue families, not close cousins. At LRV 43 vs 40, Covington Blue will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. The tonal difference — Covington Blue's green character against Sea Urchin 3's cool — becomes most visible against white trim or in morning light. At ΔE 5.2, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Covington Blue vs Sea Urchin 3 in Real Spaces
1 real room side by side. Covington Blue and Sea Urchin 3 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
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Covington Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Covington Blue vs Sea Urchin 3 Simulated Comparison
5 simulated room previews — drag the slider on each to see Covington Blue on one side and Sea Urchin 3 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 Covington Blue comparisons
See how Covington Blue stacks up against other well-photographed colors across different brands and tones.
