Celestial Blue vs S 1502-Y
Celestial Blue (Little Greene) and S 1502-Y (NCS) come from different manufacturers. Hue-wise, Celestial Blue belongs to the blue-green family and S 1502-Y to the greige-grey family. The 20-point LRV gap — 64 for S 1502-Y vs 44 for Celestial Blue — means S 1502-Y will open up a space more effectively. Where Celestial Blue leans green, S 1502-Y reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 14.0 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Celestial Blue vs S 1502-Y in Real Spaces
2 real rooms side by side. Seeing Celestial Blue and S 1502-Y 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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. S 1502-Y reflects noticeably more light off the walls, making the space read more open than Celestial Blue.
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. S 1502-Y 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 S 1502-Y Simulated Comparison
5 simulated room previews — drag the slider on each to see Celestial Blue on one side and S 1502-Y 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.
