Basalt grey vs Thames Fog
Basalt grey (RAL Classic) and Thames Fog (Valspar) come from different manufacturers. These are both greys, so the question isn't which hue to choose — it's where within grey to land. The 13-point LRV gap — 27 for Thames Fog vs 14 for Basalt grey — means Thames Fog will open up a space more effectively. A ΔE of 22.1 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
Basalt grey vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Basalt grey 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 Basalt grey comparisons
See how Basalt grey stacks up against other well-photographed colors across different brands and tones.
