Copen Blue vs Holly Glen
Both from Sherwin-Williams's palette. Copen Blue reads as blue-green, while Holly Glen reads as green-grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (59 vs 57), so they'll read as similarly Light in most lighting conditions. Both lean cool, so they'll behave similarly in mixed or changing light conditions. The ΔE 4.6 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Copen Blue vs Holly Glen in Real Spaces
4 real rooms side by side. Copen Blue and Holly Glen 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. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. The distinction reads clearly at room scale, making the choice between them concrete.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. The distinction reads clearly at room scale, making the choice between them concrete.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Copen Blue vs Holly Glen Simulated Comparison
5 simulated room previews — drag the slider on each to see Copen Blue on one side and Holly Glen 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.
Ammonite reads slightly lighter (LRV 69 vs 59), a gap that shows most in low-lit rooms.
At LRV 83 vs 59, White Dove is decisively the brighter choice.
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.
Copen Blue reads slightly lighter (LRV 59 vs 51), a gap that shows most in low-lit rooms.
At LRV 59 vs 12, Copen Blue is decisively the brighter choice.
At LRV 59 vs 8, 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.
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.