Celtic Blue vs Obsidian Green
Where Celtic Blue belongs to Benjamin Moore's range, Obsidian Green is a Little Greene color. Hue-wise, Celtic Blue belongs to the blue-grey family and Obsidian Green to the green family. They have nearly identical light reflectance values (0 vs 1), so they'll read as similarly Dark in most lighting conditions. Celtic Blue runs cool while Obsidian Green is decidedly green, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 62.8, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Celtic Blue vs Obsidian Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Celtic Blue on one side and Obsidian 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 Celtic Blue comparisons
See how Celtic Blue stacks up against other well-photographed colors across different brands and tones.
