London Fog vs Grey Blue
Where London Fog belongs to Benjamin Moore's range, Grey Blue is a RAL Classic color. London Fog reads as greige-grey, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. London Fog (LRV 56) reflects noticeably more light than Grey Blue (LRV 7), a difference of 49 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 49.8, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
London Fog vs Grey Blue in Real Spaces
1 real room side by side. Seeing London Fog and Grey Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. London Fog reflects noticeably more light off the walls, making the space read more open than Grey Blue.
Color Details
London Fog vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see London Fog on one side and Grey Blue 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 London Fog comparisons
See how London Fog stacks up against other well-photographed colors across different brands and tones.
