#00586D Hex Color

Sea Creature pairs well with warm neutrals such as terracotta and cream, which soften its cool blue-green base; pale aqua and muted gold can also add contrast without overpowering its dark, restrained character.

White text provides strong contrast on #00586d, at roughly an 8:1 ratio, while black text is much weaker; use white for headings, buttons, and body copy, then verify the exact font size and weight with a contrast checker.