Cerulean Basin color palette — #EBF8F8 · #C1E1FA · #5F8FB8 · #306B7E · #37495E

Slate Blue takes the lead with Peacock close behind in a set that reads as trust and stability at first glance.

The five colors

• Ivory (#EBF8F8): bright and airy, almost weightless.
• Powder Blue (#C1E1FA): A whisper-light, dusty blue — the color of a favorite pair of jeans.
• Slate Blue (#5F8FB8): A luminous, balanced blue — the color of open sky before noon.
• Peacock (#306B7E): A full-bodied, dusty blue — the color of open sky before noon.
• Charcoal (#37495E): A deep, shadowed, dusty blue — the color of deep harbor water.

Feels like: Trust, Stability, Calm, Sophistication. Tagged coastal, cool, light, muted.

Use it as a design system

One click turns Cerulean Basin into a complete token system: semantic roles from primary to success, an 11-stop OKLCH scale per role, a WCAG AA/AAA and APCA contrast matrix, an auto-derived dark mode and 11 export formats including CSS custom properties, Tailwind, Figma Variables and shadcn/ui.

Similar palettes

• Periwinkle Study color palette (#FAF4EC, #C1E6E8, #7CA9D9, #2F8897, #5A3C56)
• Ancient Loft color palette (#DAF5F2, #3D8CA3, #004359, #002226, #000B14)
• Worn Chapel color palette (#CEE5E1, #51AEB9, #006272, #003E3C, #00242E)
• Lagoon Corridor color palette (#EEF8F5, #99CFDE, #008991, #006155, #00434C)
• Tempered Parlor color palette (#FAF3F6, #D7DDF4, #A5BDF2, #1AAEA7, #404563)
• Blush Study color palette (#FBF1FF, #E07A9E, #6489CA, #944964, #2F4264)
• Washed Petrol Lagoon color palette (#E4F2F1, #88B7DD, #226AAF, #004C65, #1A2E4C)
• Dusty Archive color palette (#FFEFFF, #DCD8CD, #F3B59A, #907A98, #544452)

Browse the whole catalog at Explore, or see today's palette.