Little Mermaid
#2d454a
Sea-green blue with calm, medium-dark balance
About Little Mermaid
On a dark canvas, Little Mermaid looks like seawater just after the sun slips behind clouds: a medium-deep blue that stays breathable instead of going nearly-black. Compared with Mallard's cleaner, more open work-blue, this one reads cooler and more oceanic, with a slightly duskier undertone that softens the edges of text. And unlike Nocturnal Expedition's tighter, more muted night pressure, Little Mermaid holds more color presence, with a gentler saturation that feels like water rather than ink.
I use it for dashboards and finance apps when the hierarchy needs a calm backbone, but I still want the UI to feel fluid, not stalled. It works well on panel headers, tab bars, and chart grids in fintech and logistics portals, and it shows up nicely in product UIs for media platforms where you want "serious" without the cold clinical lean of greener blues.
Pair it with crisp off-whites and cool grays; if you drop it next to warmer surfaces, it can start to feel slightly withdrawn, so keep the neighborhood cool.
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Contrast checker
WCAG 2.1 contrast ratios. AA requires 4.5:1 for normal text, 3:1 for large. AAA requires 7:1 / 4.5:1.
On White #ffffff
On Gray 100 #f5f5f5
On Gray 900 #18181b
On Black #000000
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