Mermaid Sea vs RAL 740-5
Mermaid Sea (Behr) and RAL 740-5 (RAL Effect) come from different manufacturers. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. The 5-point LRV gap — 13 for Mermaid Sea vs 7 for RAL 740-5 — means Mermaid Sea will open up a space more effectively. ΔE 7.0 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Mermaid Sea vs RAL 740-5 in Real Spaces
3 real rooms side by side. Mermaid Sea and RAL 740-5 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.
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. Mermaid Sea 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. Mermaid Sea 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. Mermaid Sea has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Mermaid Sea vs RAL 740-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Mermaid Sea on one side and RAL 740-5 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 Mermaid Sea comparisons
See how Mermaid Sea stacks up against other well-photographed colors across different brands and tones.
