Sage Mountain vs Thames Fog
Where Sage Mountain belongs to Benjamin Moore's range, Thames Fog is a Valspar color. Hue-wise, Sage Mountain belongs to the greige-grey family and Thames Fog to the grey family. They have nearly identical light reflectance values (29 vs 27), so they'll read as similarly Medium in most lighting conditions. The ΔE 3.1 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Sage Mountain vs Thames Fog in Real Spaces
1 real room side by side. Sage Mountain 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.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Sage Mountain vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Sage Mountain 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 Sage Mountain comparisons
See how Sage Mountain stacks up against other well-photographed colors across different brands and tones.
