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Library

Slab. Midnight-wine reading room.

  • Productivity
  • Mixed theme
  • 8 colors
  • 2 typefaces

Slab reads like a curated library wrapped in a midnight-wine storefront: a deep plum hero cradles white serif headlines, then opens into bright, spacious editorial layouts where serif display type meets a quiet Whitney sans-serif system. Color is rationed — nearly all of the interface is grayscale — but the single coral-red action and the wine hero create a two-temperature palette: warm authority at the edges, cool utility in the middle. The aesthetic borrows from print publishing: Sentinel's 300-weight serif whispers rather than shouts, generous whitespace around each section feels like a magazine spread, and the 6px corner radius on inputs/buttons is restrained enough to feel editorial rather than soft. Decorative circles, organic blobs, and illustrated document cards float alongside flat UI — the visual language is human and craft-forward, not corporate.

Screenshot of Slab
Captured from slab.com on October 11, 2026

Slab design system

Slab

Brand2

  • Hero band background, section dividers, deep surface moments — the deepest brand tone, used as atmosphere not as UI fill

  • Red supporting accent for decorative details and low-frequency emphasis. Do not promote it to the primary CTA color

Accent1

  • Third-party sign-in button (Google OAuth) — utility color for federated auth, not a brand accent

Neutrals5

  • Highest-emphasis text on light surfaces, deep icon fills — slightly warmer than pure black, reads as ink rather than absence

  • Primary text, icons, heading strokes, input borders, default UI chrome — the dominant near-gray that gives the system its printed-paper authority

  • Secondary text, helper copy, muted badges, logo tints — recedes behind Slate Ink to build typographic depth

  • Hairline dividers, decorative stroke accents, soft borders — the quietest neutral, separates without competing

  • Canvas background, card surfaces, text on dark bands — the bright neutral that holds the content sections open

Try a pairing

Pick any two colors from the palette to check whether text stays readable on top.

Aa

Graphite on Coral Ember

5.48 : 1 contrast

Background
Text
  • Body textPasses AA 4.5
  • Large textPasses AA 3
  • StrictFails AAA 7

More DESIGN.md files. Same web, different personalities.