RAL 720-4 vs Thames Fog
RAL 720-4 (RAL Effect) and Thames Fog (Valspar) come from different manufacturers. Hue-wise, RAL 720-4 belongs to the blue family and Thames Fog to the grey family. The 8-point LRV gap — 35 for RAL 720-4 vs 27 for Thames Fog — means RAL 720-4 will open up a space more effectively. A ΔE of 33.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 720-4 vs Thames Fog in Real Spaces
3 real rooms side by side. Seeing RAL 720-4 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.
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. RAL 720-4 reads slightly lighter here — a subtle but real difference in how open the space feels.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. RAL 720-4 has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. RAL 720-4 has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
RAL 720-4 vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 720-4 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 720-4 comparisons
See how RAL 720-4 stacks up against other well-photographed colors across different brands and tones.
