Major Blue vs Thames Fog
Where Major Blue belongs to Sherwin-Williams's range, Thames Fog is a Valspar color. Major Blue reads as blue, while Thames Fog reads as grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (29 vs 27), so they'll read as similarly Medium in most lighting conditions. With a ΔE of 39.2, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Major Blue vs Thames Fog in Real Spaces
2 real rooms side by side. Seeing Major Blue and Thames Fog in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Major Blue vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Major Blue 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 Major Blue comparisons
See how Major Blue stacks up against other well-photographed colors across different brands and tones.
