Sea Creature

#00586d

Sea glass blue with richer calm than lagoon

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About Sea Creature

I see Sea Creature as the blue you'd pick when you want "ocean calm" without going so deep that it starts behaving like a near-black. Compared to 's teal-leaning direction and 's steadier, display-backlight feel, this one reads cooler and clearer, with a more marine, slightly muted saturation that keeps it from flashing. It's not heavy like either, so it doesn't demand isolation from bright elements.

I reach for it in medical dashboards and clinician UIs where you need a dependable link or section marker that stays legible on dark-mode surfaces. It also works in fintech platforms for status tags, table highlights, and chart accents when you want the brand blue to feel calm rather than urgent. The mood is cool, measured, and UI-friendly, the kind of blue that holds its own even when the rest of the screen is busy.

Pair it with grays that aren't too sterile, and be cautious about overly teal-adjacent palettes, because that's the one place it can blur into its neighbors.

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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

Aa
8.03:1AAA

On Gray 100 #f5f5f5

Aa
7.36:1AAA

On Gray 900 #18181b

Aa
2.21:1Fail

On Black #000000

Aa
2.62:1Fail

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