Cobalt Hollow color palette — #DEF1FF · #0087C2 · #1E2457 · #1E252C · #000A06

Built around Cerulean, softened by Deep Indigo — the whole palette hums with trust and stability.

The five colors

• Frost (#DEF1FF): A whisper-light, dusty blue — the color of open sky before noon.
• Cerulean (#0087C2): A full-bodied, balanced blue — the color of deep harbor water.
• Deep Indigo (#1E2457): A deep, shadowed, balanced violet — the color of a velvet chair.
• Onyx (#1E252C): a grounded near-black with real depth.
• Ink (#000A06): A deep, shadowed, dusty teal — the color of glacier melt.

Feels like: Trust, Stability, Creativity, Sophistication. Tagged noir, dark, luxury, muted.

Use it as a design system

One click turns Cobalt Hollow 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

• Cerulean Dune color palette (#D3FADB, #008F9B, #002E4A, #1E1D27, #000B02)
• Lowlit Terrace color palette (#E4EFFF, #047AF0, #2E1E56, #100211, #000201)
• Linen Azure Study color palette (#C2EADB, #009DDC, #53508E, #043953, #000B02)
• Denim Coast color palette (#CAE4F9, #00628C, #29252B, #1B1347, #000911)
• Hushed Sky color palette (#E8FAF5, #6DB4F8, #634D5A, #212E2B, #0B110D)
• Aged Summit color palette (#FFF2EC, #D5DEF9, #00A7E0, #00755E, #00244B)
• Misty Violet Pier color palette (#ECECFF, #7959FF, #421349, #25190F, #14010C)
• Iris Lantern color palette (#F3F4FF, #888AFF, #A38700, #7C7600, #0E0836)

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