Nightfall vs Rock Bottom
Nightfall (Benjamin Moore) and Rock Bottom (Sherwin-Williams) come from different manufacturers. These are both greys, so the question isn't which hue to choose — it's where within grey to land. Their light reflectance values are nearly the same — 8 vs 7 — so neither will read significantly brighter or darker than the other. Where Nightfall leans blue, Rock Bottom reads neutral — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 2.2 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Nightfall vs Rock Bottom Simulated Comparison
5 simulated room previews — drag the slider on each to see Nightfall on one side and Rock Bottom 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 Nightfall comparisons
See how Nightfall stacks up against other well-photographed colors across different brands and tones.
