Yellow grey vs Thames Fog
Yellow grey (RAL Classic) and Thames Fog (Valspar) come from different manufacturers. Hue-wise, Yellow grey belongs to the greige-grey family and Thames Fog to the grey family. Their light reflectance values are nearly the same — 27 vs 27 — so neither will read significantly brighter or darker than the other. ΔE 8.2 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Yellow grey vs Thames Fog in Real Spaces
1 real room side by side. Yellow grey and Thames Fog are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Yellow grey vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Yellow 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 Yellow grey comparisons
See how Yellow grey stacks up against other well-photographed colors across different brands and tones.
