Celestial Blue vs Halcyon Green
Celestial Blue is a Little Greene color while Halcyon Green comes from Sherwin-Williams. Hue-wise, Celestial Blue belongs to the blue-green family and Halcyon Green to the green-grey family. At LRV 44 vs 38, Celestial Blue will read as the brighter of the two — a 6-point gap that matters most in north-facing or low-light rooms. The tonal difference — Celestial Blue's green character against Halcyon Green's cool — becomes most visible against white trim or in morning light. At ΔE 4.2, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Celestial Blue vs Halcyon Green in Real Spaces
4 real rooms side by side. Celestial Blue and Halcyon Green 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. Celestial Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The brightness difference is modest but present — Celestial Blue gives the walls a little more lift.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The brightness difference is modest but present — Celestial Blue gives the walls a little more lift.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. Celestial Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Celestial Blue vs Halcyon Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Celestial Blue on one side and Halcyon Green 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.
