Undine vs Thames Fog
Undine is a Behr color while Thames Fog comes from Valspar. Undine reads as blue, while Thames Fog reads as grey — two distinct hue families, not close cousins. At LRV 43 vs 27, Undine will read as the brighter of the two — a 16-point gap that matters most in north-facing or low-light rooms. At ΔE 24.3, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Undine vs Thames Fog in Real Spaces
4 real rooms side by side. Seeing Undine 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.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Undine returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The LRV gap is large enough that Undine will make the room feel meaningfully brighter than Thames Fog would.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The LRV gap is large enough that Undine will make the room feel meaningfully brighter than Thames Fog would.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The LRV gap is large enough that Undine will make the room feel meaningfully brighter than Thames Fog would.
Color Details
Undine vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Undine 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 Undine comparisons
See how Undine stacks up against other well-photographed colors across different brands and tones.
