Antique Cobalt color palette — #ECF4ED · #9FCDF7 · #577BBD · #00586E · #141F3B

Built around Slate, softened by Peacock — the whole palette hums with trust and stability.

The five colors

• Cream (#ECF4ED): bright and airy, almost weightless.
• Sky (#9FCDF7): A whisper-light, dusty blue — the color of deep harbor water.
• Slate (#577BBD): A full-bodied, balanced violet — the color of twilight just after sunset.
• Peacock (#00586E): A full-bodied, dusty blue — the color of a favorite pair of jeans.
• Midnight (#141F3B): A deep, shadowed, dusty violet — the color of a velvet chair.

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

Use it as a design system

One click turns Antique Cobalt 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

• Ancient Cerulean color palette (#ECF5ED, #8ED5DD, #2E88A1, #005D51, #012338)
• Cobalt Summit color palette (#FAF4ED, #A4D0C3, #5C75B8, #005E6A, #3A3558)
• Hushed Cerulean color palette (#E3F2E6, #3297B3, #005071, #002C2C, #00040E)
• Timeworn Ash color palette (#EDF4EE, #D7DBEF, #7E9ECB, #487185, #2B364B)
• Misty Jade color palette (#CFF2DC, #00B28B, #007C6F, #004E50, #002A30)
• Dusty Turquoise color palette (#BFFBFF, #00C3D8, #007981, #003A41, #001214)
• Misty Rust color palette (#CDF0F9, #00A6A1, #B95A61, #00625F, #370910)
• Quiet Byzantium Courtyard color palette (#C4E6F0, #008D91, #934AA9, #78530B, #00171E)

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