S 4500-N vs Rock Slide
Where S 4500-N belongs to NCS's range, Rock Slide is a PPG color. S 4500-N reads as grey, while Rock Slide reads as greige-grey — two distinct hue families, not close cousins. Rock Slide (LRV 31) reflects noticeably more light than S 4500-N (LRV 27), a difference of 4 points that becomes especially apparent in rooms with limited natural light. The ΔE 7.0 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
S 4500-N vs Rock Slide in Real Spaces
3 real rooms side by side. S 4500-N and Rock Slide 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
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Rock Slide reads slightly lighter here — a subtle but real difference in how open the space feels.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Rock Slide reads slightly lighter here — a subtle but real difference in how open the space feels.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The brightness difference is modest but present — Rock Slide gives the walls a little more lift.
Color Details
S 4500-N vs Rock Slide Simulated Comparison
5 simulated room previews — drag the slider on each to see S 4500-N on one side and Rock Slide 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 4500-N comparisons
See how S 4500-N stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 27, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 27), opening up a space where S 4500-N encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 27), a gap that shows most in low-lit rooms.
Agreeable Gray reflects far more light (LRV 60 vs 27), opening up a space where S 4500-N encloses it.
At LRV 58 vs 27, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 27 vs 27), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 27), opening up a space where S 4500-N encloses it.
At LRV 55 vs 27, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 27, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 27), opening up a space where S 4500-N encloses it.
At LRV 66 vs 27, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 27, Shoji White is decisively the brighter choice.
At LRV 27 vs 12, S 4500-N is decisively the brighter choice.
At LRV 27 vs 8, S 4500-N is decisively the brighter choice.
At LRV 68 vs 27, Skimming Stone is decisively the brighter choice.
At LRV 27 vs 12, S 4500-N is decisively the brighter choice.
At LRV 45 vs 27, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 27), a gap that shows most in low-lit rooms.