Celestial Blue vs Sea Serpent
Where Celestial Blue belongs to Little Greene's range, Sea Serpent is a Sherwin-Williams color. Hue-wise, Celestial Blue belongs to the blue-green family and Sea Serpent to the blue family. Celestial Blue (LRV 44) reflects noticeably more light than Sea Serpent (LRV 7), a difference of 37 points that becomes especially apparent in rooms with limited natural light. Celestial Blue runs green while Sea Serpent is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 42.1, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Celestial Blue vs Sea Serpent in Real Spaces
4 real rooms side by side. Seeing Celestial Blue and Sea Serpent in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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 LRV gap is large enough that Celestial Blue will make the room feel meaningfully brighter than Sea Serpent would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Celestial Blue reflects noticeably more light off the walls, making the space read more open than Sea Serpent.
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. Celestial Blue reflects noticeably more light off the walls, making the space read more open than Sea Serpent.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Celestial Blue will make the room feel meaningfully brighter than Sea Serpent would.
Color Details
Celestial Blue vs Sea Serpent Simulated Comparison
5 simulated room previews — drag the slider on each to see Celestial Blue on one side and Sea Serpent 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 Celestial Blue comparisons
See how Celestial Blue stacks up against other well-photographed colors across different brands and tones.
