Ultramarine Harbor color palette — #EFF6FF · #88BBFF · #B58300 · #0058B3 · #221600

Cobalt and Mustard set the tone — five colors that lean into trust and stability.

The five colors

• Ivory (#EFF6FF): bright and airy, almost weightless.
• Sky (#88BBFF): A luminous, balanced blue — the color of open sky before noon.
• Mustard (#B58300): A luminous, balanced gold — the color of afternoon light on wheat.
• Cobalt (#0058B3): A full-bodied, vivid blue — the color of open sky before noon.
• Ink (#221600): A deep, shadowed, dusty gold — the color of old brass.

Feels like: Trust, Stability, Optimism, Balance. Tagged cool.

Use it as a design system

One click turns Ultramarine Harbor 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

• Amber Orchard color palette (#EDF7FF, #61C3FF, #CC6200, #006B9B, #2B0F00)
• Grape Chapel color palette (#F2F5FF, #B5ACFF, #979100, #5C38C3, #1B1900)
• Cobalt Balcony color palette (#C9E1FA, #92C8FF, #CD9803, #0071C2, #362600)
• Tempered Nightshade color palette (#E7EEFF, #7C83F7, #917800, #3E20C6, #0B0700)
• Aged Pier color palette (#F9E4F7, #437AE3, #9A5900, #0039A5, #1E0D00)
• Powdered Quarry color palette (#ECD6ED, #3480D3, #007F49, #00498A, #00321A)
• Byzantium Hollow color palette (#F4F4FF, #DCA8FF, #4CAF00, #8F00C7, #0A2600)
• Linen Iris color palette (#F2F5FF, #D2CDFF, #C3C453, #8777D8, #174131)

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