Opal vs Thames Fog
Opal (Benjamin Moore) and Thames Fog (Valspar) come from different manufacturers. Opal reads as beige, while Thames Fog reads as grey — two distinct hue families, not close cousins. The 57-point LRV gap — 84 for Opal vs 27 for Thames Fog — means Opal will open up a space more effectively. A ΔE of 34.8 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
Opal vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Opal 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 Opal comparisons
See how Opal stacks up against other well-photographed colors across different brands and tones.








































