RAL 520-4 vs Thames Fog
Where RAL 520-4 belongs to RAL Effect's range, Thames Fog is a Valspar color. Hue-wise, RAL 520-4 belongs to the pink family and Thames Fog to the grey family. They have nearly identical light reflectance values (26 vs 27), so they'll read as similarly Medium in most lighting conditions. With a ΔE of 38.3, 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.
RAL 520-4 vs Thames Fog in Real Spaces
2 real rooms side by side. Seeing RAL 520-4 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.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. The distinction reads clearly at room scale, making the choice between them concrete.
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
RAL 520-4 vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 520-4 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 RAL 520-4 comparisons
See how RAL 520-4 stacks up against other well-photographed colors across different brands and tones.
