Thames Fog vs RAL 850-4
Where Thames Fog belongs to Valspar's range, RAL 850-4 is a RAL Effect color. They have nearly identical light reflectance values (27 vs 27), so they'll read as similarly medium in most lighting conditions. The ΔE 3.9 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice.
Thames Fog vs RAL 850-4 Color Comparison
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.
Color Details
Thames Fog vs RAL 850-4 in Real Spaces
Thames Fog and RAL 850-4 are close enough that the difference can be hard to judge from a chip alone. These real-room photos show how each reads at scale, across different spaces and lighting conditions. Showing 4 room types where both colors have photos.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
@melaniejadedesign
Plan Home visualization
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.
@thelancashireterrace
Plan Home visualization
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.
@bellwaycherry17
Plan Home visualization
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.
@bh_paintingdecorating
Plan Home visualization
More Thames Fog comparisons
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