Arsenic vs Thames Fog
Arsenic is a Farrow & Ball color while Thames Fog comes from Valspar. Arsenic reads as green, while Thames Fog reads as grey — two distinct hue families, not close cousins. At LRV 37 vs 27, Arsenic will read as the brighter of the two — a 10-point gap that matters most in north-facing or low-light rooms. At ΔE 21.2, 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.
Arsenic vs Thames Fog in Real Spaces
2 real rooms side by side. Seeing Arsenic and Thames Fog 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. Arsenic returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The LRV gap is large enough that Arsenic will make the room feel meaningfully brighter than Thames Fog would.
Color Details
Arsenic vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Arsenic on one side and Thames Fog 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 Arsenic comparisons
See how Arsenic stacks up against other well-photographed colors across different brands and tones.
