RAL 720-4 vs Mariner
RAL 720-4 (RAL Effect) and Mariner (Sherwin-Williams) come from different manufacturers. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. The 11-point LRV gap — 46 for Mariner vs 35 for RAL 720-4 — means Mariner will open up a space more effectively. ΔE 4.5 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 720-4 vs Mariner in Real Spaces
1 real room side by side. RAL 720-4 and Mariner 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.
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. Mariner 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 720-4 vs Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 720-4 on one side and Mariner 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.
