Mermaid Sea vs Just Walnut
Mermaid Sea is a Behr color while Just Walnut comes from Dulux. Mermaid Sea reads as blue, while Just Walnut reads as beige-greige — two distinct hue families, not close cousins. At LRV 72 vs 13, Just Walnut will read as the brighter of the two — a 59-point gap that matters most in north-facing or low-light rooms. The tonal difference — Mermaid Sea's green and blue character against Just Walnut's warm — becomes most visible against white trim or in morning light. At ΔE 50.3, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Mermaid Sea vs Just Walnut in Real Spaces
5 real rooms side by side. Seeing Mermaid Sea and Just Walnut in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Just Walnut returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The LRV gap is large enough that Just Walnut will make the room feel meaningfully brighter than Mermaid Sea would.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The LRV gap is large enough that Just Walnut will make the room feel meaningfully brighter than Mermaid Sea would.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The LRV gap is large enough that Just Walnut will make the room feel meaningfully brighter than Mermaid Sea would.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The LRV gap is large enough that Just Walnut will make the room feel meaningfully brighter than Mermaid Sea would.
Color Details
Mermaid Sea vs Just Walnut Simulated Comparison
5 simulated room previews — drag the slider on each to see Mermaid Sea on one side and Just Walnut 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.
