River Blue vs Black grey
River Blue is a Benjamin Moore color while Black grey comes from RAL Classic. River Blue reads as blue, while Black grey reads as blue-grey — two distinct hue families, not close cousins. With LRVs of 7 and 6, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 14.6, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
River Blue vs Black grey in Real Spaces
2 real rooms side by side. Seeing River Blue and Black 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
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
River Blue vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see River Blue on one side and Black 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 River Blue comparisons
See how River Blue stacks up against other well-photographed colors across different brands and tones.
