Mermaid Sea vs RAL 730-6
Mermaid Sea is a Behr color while RAL 730-6 comes from RAL Effect. These are both blues, so the question isn't which hue to choose — it's where within blue to land. At LRV 17 vs 13, RAL 730-6 will read as the brighter of the two — a 4-point gap that matters most in north-facing or low-light rooms. At ΔE 9.4, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Mermaid Sea vs RAL 730-6 in Real Spaces
4 real rooms side by side. Mermaid Sea and RAL 730-6 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
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The brightness difference is modest but present — RAL 730-6 gives the walls a little more lift.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The brightness difference is modest but present — RAL 730-6 gives the walls a little more lift.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The brightness difference is modest but present — RAL 730-6 gives the walls a little more lift.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The brightness difference is modest but present — RAL 730-6 gives the walls a little more lift.
Color Details
Mermaid Sea vs RAL 730-6 Simulated Comparison
5 simulated room previews — drag the slider on each to see Mermaid Sea on one side and RAL 730-6 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.
