Coastline vs River Rock paint color comparison

Coastline vs River Rock

CoastlineBenjamin MoorevsRiver RockBenjamin MooreΔE 40.0 — Very different colors

Coastline and River Rock come from the same Benjamin Moore collection. Coastline reads as blue-grey, while River Rock reads as beige-greige — two distinct hue families, not close cousins. The 27-point LRV gap — 34 for Coastline vs 7 for River Rock — means Coastline will open up a space more effectively. Where Coastline leans blue, River Rock reads yellow — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 40.0 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.

Color Details

Coastline
Benjamin Moore · AF-570
LRV33.9
BrandBenjamin Moore
NumberAF-570
UndertoneBlue
TemperatureCool
BrightnessMedium
River Rock
Benjamin Moore · 2139-10
LRV6.6
BrandBenjamin Moore
Number2139-10
UndertoneYellow
TemperatureWarm
BrightnessDark

Coastline vs River Rock Simulated Comparison

5 simulated room previews — drag the slider on each to see Coastline on one side and River Rock on the other.

Bathroom
Bedroom
House
Kitchen Cabinets
Living Room

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.