Starless Sky vs Cement grey
Starless Sky (PPG) and Cement grey (RAL Classic) come from different manufacturers. These are both greys, so the question isn't which hue to choose — it's where within grey to land. The 19-point LRV gap — 24 for Cement grey vs 5 for Starless Sky — means Cement grey will open up a space more effectively. A ΔE of 29.2 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Starless Sky vs Cement grey in Real Spaces
5 real rooms side by side. Seeing Starless Sky and Cement grey 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. Cement grey reflects noticeably more light off the walls, making the space read more open than Starless Sky.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Cement grey returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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. Cement grey returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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. Cement grey returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Cement grey reflects noticeably more light off the walls, making the space read more open than Starless Sky.
Color Details
Starless Sky vs Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Starless Sky on one side and Cement grey 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.
Ammonite reflects far more light (LRV 69 vs 5), opening up a space where Starless Sky encloses it.
At LRV 83 vs 5, White Dove is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 6 vs 5), so neither reads brighter in a room.
Purbeck Stone reflects far more light (LRV 52 vs 5), opening up a space where Starless Sky encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 5), opening up a space where Starless Sky encloses it.
At LRV 52 vs 5, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 5), opening up a space where Starless Sky encloses it.
At LRV 58 vs 5, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 5, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 5), opening up a space where Starless Sky encloses it.
With LRVs of 5 and 4, the two reflect almost the same amount of light.
At LRV 55 vs 5, Tranquil Dawn is decisively the brighter choice.
A 8-point LRV gap (13 vs 5) makes Bancha the marginally brighter of the two.
At LRV 44 vs 5, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 5), opening up a space where Starless Sky encloses it.
Artichoke reflects far more light (LRV 21 vs 5), opening up a space where Starless Sky encloses it.
At LRV 66 vs 5, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 5, Shoji White is decisively the brighter choice.
At LRV 83 vs 5, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 5), opening up a space where Starless Sky encloses it.
A 7-point LRV gap (12 vs 5) makes Pewter Green the marginally brighter of the two.
A 3-point LRV gap (8 vs 5) makes Duck Green the marginally brighter of the two.
At LRV 68 vs 5, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 5), opening up a space where Starless Sky encloses it.
A 7-point LRV gap (12 vs 5) makes Vintage Vogue the marginally brighter of the two.
At LRV 45 vs 5, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 5), opening up a space where Starless Sky encloses it.