S 4010-B70G vs Thames Fog
S 4010-B70G (NCS) and Thames Fog (Valspar) come from different manufacturers. Hue-wise, S 4010-B70G belongs to the blue-grey family and Thames Fog to the grey family. Their light reflectance values are nearly the same — 28 vs 27 — so neither will read significantly brighter or darker than the other. ΔE 9.8 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.
S 4010-B70G vs Thames Fog in Real Spaces
1 real room side by side. S 4010-B70G 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
S 4010-B70G vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see S 4010-B70G 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 S 4010-B70G comparisons
See how S 4010-B70G stacks up against other well-photographed colors across different brands and tones.
