Copen Blue vs Sea Smoke
Where Copen Blue belongs to Sherwin-Williams's range, Sea Smoke is a Tikkurila color. Hue-wise, Copen Blue belongs to the blue-green family and Sea Smoke to the green-grey family. Sea Smoke (LRV 63) reflects noticeably more light than Copen Blue (LRV 59), a difference of 4 points that becomes especially apparent in rooms with limited natural light. The ΔE 3.2 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.
Copen Blue vs Sea Smoke in Real Spaces
2 real rooms side by side. Copen Blue and Sea Smoke 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 Smoke gives the walls a little more lift.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Sea Smoke reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Copen Blue vs Sea Smoke Simulated Comparison
5 simulated room previews — drag the slider on each to see Copen Blue on one side and Sea Smoke 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 Copen Blue comparisons
See how Copen Blue stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 59, White Dove is decisively the brighter choice.
Ammonite reads slightly lighter (LRV 69 vs 59), a gap that shows most in low-lit rooms.
At LRV 59 vs 6, Copen Blue is decisively the brighter choice.
Copen Blue reads slightly lighter (LRV 59 vs 52), a gap that shows most in low-lit rooms.
Copen Blue reflects far more light (LRV 59 vs 30), opening up a space where Evergreen Fog encloses it.
A 7-point LRV gap (59 vs 52) makes Copen Blue the marginally brighter of the two.
With LRVs of 60 and 59, the two reflect almost the same amount of light.
Their light reflectance is nearly identical (LRV 59 vs 58), so neither reads brighter in a room.
At LRV 59 vs 27, Copen Blue is decisively the brighter choice.
Copen Blue reflects far more light (LRV 59 vs 43), opening up a space where French Gray encloses it.
Copen Blue reflects far more light (LRV 59 vs 4), opening up a space where Naval encloses it.
A 4-point LRV gap (59 vs 55) makes Copen Blue the marginally brighter of the two.
At LRV 59 vs 13, Copen Blue is decisively the brighter choice.
At LRV 59 vs 44, Copen Blue is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 59), opening up a space where Copen Blue encloses it.
Copen Blue reflects far more light (LRV 59 vs 21), opening up a space where Artichoke encloses it.
A 7-point LRV gap (66 vs 59) makes Balboa Mist the marginally brighter of the two.
At LRV 74 vs 59, Shoji White is decisively the brighter choice.
At LRV 83 vs 59, Snowbound is decisively the brighter choice.
At LRV 59 vs 12, Copen Blue is decisively the brighter choice.
A 10-point LRV gap (68 vs 59) makes Skimming Stone the marginally brighter of the two.
Copen Blue reflects far more light (LRV 59 vs 41), opening up a space where Dix Blue encloses it.
Calamine reads slightly lighter (LRV 68 vs 59), a gap that shows most in low-lit rooms.
Copen Blue reflects far more light (LRV 59 vs 25), opening up a space where Treron encloses it.
At LRV 59 vs 12, Copen Blue is decisively the brighter choice.
At LRV 59 vs 45, Copen Blue is decisively the brighter choice.
Copen Blue reflects far more light (LRV 59 vs 31), opening up a space where Pale Green encloses it.
Copen Blue reflects far more light (LRV 59 vs 7), opening up a space where Pine Needle encloses it.
Copen Blue reflects far more light (LRV 59 vs 24), opening up a space where Cement grey encloses it.
With LRVs of 59 and 57, the two reflect almost the same amount of light.