Starless Sky vs Black green
Starless Sky (PPG) and Black green (RAL Classic) come from different manufacturers. Starless Sky reads as grey, while Black green reads as blue-green — two distinct hue families, not close cousins. Their light reflectance values are nearly the same — 5 vs 7 — so neither will read significantly brighter or darker than the other. ΔE 6.2 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Starless Sky vs Black green in Real Spaces
2 real rooms side by side. Starless Sky and Black 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.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
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. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
Starless Sky vs Black green Simulated Comparison
5 simulated room previews — drag the slider on each to see Starless Sky 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 Starless Sky comparisons
See how Starless Sky stacks up against other well-photographed colors across different brands and tones.
