Celestial Blue vs Black green
Celestial Blue (Little Greene) and Black green (RAL Classic) come from different manufacturers. These are both blue-greens, so the question isn't which hue to choose — it's where within blue-green to land. The 37-point LRV gap — 44 for Celestial Blue vs 7 for Black green — means Celestial Blue will open up a space more effectively. A ΔE of 47.8 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Celestial Blue vs Black green in Real Spaces
1 real room side by side. Seeing Celestial Blue and Black green in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Celestial Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Celestial Blue vs Black green Simulated Comparison
5 simulated room previews — drag the slider on each to see Celestial Blue on one side and Black 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.
