RAL 670-4 vs Surfin'
RAL 670-4 (RAL Effect) and Surfin' (Sherwin-Williams) come from different manufacturers. These are both blues, so the question isn't which hue to choose — it's where within blue to land. The 8-point LRV gap — 46 for Surfin' vs 38 for RAL 670-4 — means Surfin' will open up a space more effectively. ΔE 3.8 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
RAL 670-4 vs Surfin' in Real Spaces
1 real room side by side. RAL 670-4 and Surfin' are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Surfin' returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
RAL 670-4 vs Surfin' Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 670-4 on one side and Surfin' 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 670-4 comparisons
See how RAL 670-4 stacks up against other well-photographed colors across different brands and tones.
