S 1500-N vs Cool Slate
Where S 1500-N belongs to NCS's range, Cool Slate is a PPG color. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. They have nearly identical light reflectance values (64 vs 62), so they'll read as similarly Light in most lighting conditions. At ΔE 2.1, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
S 1500-N vs Cool Slate in Real Spaces
2 real rooms side by side. S 1500-N and Cool Slate 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.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Dining Room
A dining room lit by a dimmed pendant or candles is one of the most forgiving environments for paint — warm light softens almost everything. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Color Details
S 1500-N vs Cool Slate Simulated Comparison
5 simulated room previews — drag the slider on each to see S 1500-N on one side and Cool Slate 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 S 1500-N comparisons
See how S 1500-N stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 64), opening up a space where S 1500-N encloses it.
At LRV 64 vs 52, S 1500-N is decisively the brighter choice.
At LRV 64 vs 30, S 1500-N is decisively the brighter choice.
A 4-point LRV gap (64 vs 60) makes S 1500-N the marginally brighter of the two.
S 1500-N reads slightly lighter (LRV 64 vs 58), a gap that shows most in low-lit rooms.
S 1500-N reflects far more light (LRV 64 vs 27), opening up a space where Denim Drift encloses it.
At LRV 64 vs 43, S 1500-N is decisively the brighter choice.
S 1500-N reads slightly lighter (LRV 64 vs 55), a gap that shows most in low-lit rooms.
S 1500-N reflects far more light (LRV 64 vs 44), opening up a space where Hardwick White encloses it.
At LRV 84 vs 64, Pure White is decisively the brighter choice.
With LRVs of 66 and 64, the two reflect almost the same amount of light.
Shoji White reads slightly lighter (LRV 74 vs 64), a gap that shows most in low-lit rooms.
S 1500-N reflects far more light (LRV 64 vs 12), opening up a space where Pewter Green encloses it.
S 1500-N reflects far more light (LRV 64 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reads slightly lighter (LRV 68 vs 64), a gap that shows most in low-lit rooms.
S 1500-N reflects far more light (LRV 64 vs 12), opening up a space where Vintage Vogue encloses it.
S 1500-N reflects far more light (LRV 64 vs 45), opening up a space where Saybrook Sage encloses it.
At LRV 64 vs 31, S 1500-N is decisively the brighter choice.