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Astryx

An open-source design system from Meta, built for people and AI agents

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Visit site (opens astryx.atmeta.com in a new tab)Use this style

The style

A friendly, open product language. Clean white pages with warm cream panels, a rounded geometric sans for headings and a soft humanist sans for reading. Near-black pills lead, a bright cobalt marks links and product actions, and a sunny yellow adds the odd moment of play. Cards lift gently on soft, layered shadows.

Colours

  • Brand#2243ff
  • Buttons#19150f
  • Highlight#a59400
  • Background#fefdfb
  • Text#1d1c11

Click a colour to copy it.

Fonts

Outfit

For headings

Figtree

For everything else

Buttons

Get startedContinueCancel

Near-black pills (32–36px) for site actions; cobalt #225BFF buttons with 8px corners (40–48px) in the product.

Use this style in your project

Pick the way that suits you. The first one needs no design or coding knowledge.

With an AI tool

Your AI tool builds the page for you, in Astryx’s style.

2. Open it in

For developers

Ready-made CSS variables, a Tailwind theme and design tokens, with light and dark modes.

See the code

Make it your own

Change the colours, fonts and shapes, and see the result straight away before you use it.

Customise

Files

The code, ready to copy

Every file says where the style came from.

tokens.css — Colours, fonts and sizes as CSS variables, with light and dark modes.

/* Cobalt Matcha — design tokens generated by Markdown */
/* Derived from an analysis of astryx.atmeta.com; how different from the source: a little different (30/100). */
/* Inspired by, not a copy of, the source. Adapt before commercial use; no logos, imagery, copy or proprietary fonts are included. */

:root {
  color-scheme: light;
  --color-background: #fefdfb;
  --color-surface: #f8f4ed;
  --color-surface-muted: #f3f2ef;
  --color-text: #1d1c11;
  --color-text-muted: #6e6d65;
  --color-border: #dfdeda;
  --color-primary: #19150f;
  --color-on-primary: #ffffff;
  --color-brand: #2243ff;
  --color-on-brand: #ffffff;
  --color-accent: #a59400;
  --color-success: #2f7e54;
  --color-warning: #9c691c;
  --color-danger: #a3443e;
  --font-display: "Outfit", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Figtree", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Space Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --text-display: 3.25rem;
  --text-display-line-height: 1.25;
  --text-display-weight: 600;
  --text-display-tracking: 0em;
  --text-h1: 2.5625rem;
  --text-h1-line-height: 1.28;
  --text-h1-weight: 600;
  --text-h1-tracking: 0em;
  --text-h2: 2.0625rem;
  --text-h2-line-height: 1.31;
  --text-h2-weight: 600;
  --text-h2-tracking: 0em;
  --text-h3: 1.625rem;
  --text-h3-line-height: 1.37;
  --text-h3-weight: 600;
  --text-h3-tracking: 0em;
  --text-lead: 1.25rem;
  --text-lead-line-height: 1.5;
  --text-lead-weight: 400;
  --text-lead-tracking: -0.005em;
  --text-body: 1rem;
  --text-body-line-height: 1.6;
  --text-body-weight: 400;
  --text-body-tracking: 0em;
  --text-small: 0.8125rem;
  --text-small-line-height: 1.5;
  --text-small-weight: 400;
  --text-small-tracking: 0.005em;
  --text-caption: 0.6875rem;
  --text-caption-line-height: 1.4;
  --text-caption-weight: 400;
  --text-caption-tracking: 0.01em;
  --text-label: 0.8125rem;
  --text-label-line-height: 1.3;
  --text-label-weight: 600;
  --text-label-tracking: 0.01em;
  --text-code: 0.875rem;
  --text-code-line-height: 1.55;
  --text-code-weight: 400;
  --text-code-tracking: 0em;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;
  --radius-none: 0px;
  --radius-sm: 5px;
  --radius-md: 10px;
  --radius-lg: 15px;
  --radius-xl: 25px;
  --radius-full: 9999px;
  --border-width: 0px;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 12px -2px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.04);
  --shadow-lg: 0 18px 40px -12px rgb(0 0 0 / 0.18);
  --duration-fast: 110ms;
  --duration-base: 190ms;
  --duration-slow: 320ms;
  --ease-standard: cubic-bezier(0.24, 1, 0.4, 1);
  --ease-enter: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-exit: cubic-bezier(0.7, 0, 0.84, 0);
  --container: 1224px;
  --gutter: 24px;
  --button-radius: 9999px;
  --button-padding: 12px 16px;
  --input-radius: 10px;
  --input-height: 48px;
  --card-radius: 16px;
  --card-padding: 24px;
  --badge-radius: 9999px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-background: #161410;
    --color-surface: #22201c;
    --color-surface-muted: #272521;
    --color-text: #f0eeea;
    --color-text-muted: #9d9b97;
    --color-border: #42403c;
    --color-primary: #b6a386;
    --color-on-primary: #141210;
    --color-brand: #2243ff;
    --color-on-brand: #ffffff;
    --color-accent: #e2cb00;
    --color-success: #72ca9b;
    --color-warning: #e0a752;
    --color-danger: #cd7f7a;
  }
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-background: #161410;
  --color-surface: #22201c;
  --color-surface-muted: #272521;
  --color-text: #f0eeea;
  --color-text-muted: #9d9b97;
  --color-border: #42403c;
  --color-primary: #b6a386;
  --color-on-primary: #141210;
  --color-brand: #2243ff;
  --color-on-brand: #ffffff;
  --color-accent: #e2cb00;
  --color-success: #72ca9b;
  --color-warning: #e0a752;
  --color-danger: #cd7f7a;
}

@media (prefers-reduced-motion: reduce) {
  :root { --duration-fast: 0ms; --duration-base: 0ms; --duration-slow: 0ms; }
}
See every detail

Buttons

Inputs

Badges

New ActivePendingOverdue

Project

Quarterly field notes

Draft

A card groups one idea: a title, one line of support and a clear next step.

Updated 2h agoOpen project

Weekly digest is ready

Three new comments and one approval.

npm i @brandless/ui

01

Colour

Semantic roles for light mode. Contrast is checked against WCAG AA as you edit.

  • Background

  • Surface

  • Surface muted

  • AA 16.8:1

    Text

  • AA 5.1:1

    Text muted

  • Border

  • AA 17.9:1

    Primary

  • AA 18.2:1

    On primary

  • Brand

  • AA 6.3:1

    On brand

  • AA 3.0:1

    Accent

  • AA 4.9:1

    Success

  • AA 4.6:1

    Warning

  • AA 6.0:1

    Danger

02

Typography

Base 16px on a 1.268 modular scale. Only open-licence fonts are recommended.

display

Outfit

Detected · open licence

body

Figtree

Detected · open licence

mono

Space Mono

Suggested
  • display · 52px / 1.25 · 600 · 0em

    The quiet grammar of form

  • h1 · 41px / 1.28 · 600 · 0em

    The quiet grammar of form

  • h2 · 33px / 1.31 · 600 · 0em

    The quiet grammar of form

  • h3 · 26px / 1.37 · 600 · 0em

    The quiet grammar of form

  • lead · 20px / 1.5 · 400 · -0.005em

    Readable text sets the pace of an interface.

  • body · 16px / 1.6 · 400 · 0em

    Readable text sets the pace of an interface.

  • small · 13px / 1.5 · 400 · 0.005em

    Readable text sets the pace of an interface.

  • caption · 11px / 1.4 · 400 · 0.01em

    Readable text sets the pace of an interface.

  • label · 13px / 1.3 · 600 · 0.01em

    Readable text sets the pace of an interface.

  • code · 14px / 1.55 · 400 · 0em

    const tokens = await load();

03

Spacing

A 8px base unit. Use the scale for padding, gaps and section rhythm.

  • 4px
  • 8px
  • 12px
  • 16px
  • 24px
  • 32px
  • 48px
  • 64px
  • 96px
  • 128px

04

Shape & surface

Floating chrome uses a blurred, semi-opaque surface over content; body surfaces stay opaque.

Radii

  • none

    0px

  • sm

    5px

  • md

    10px

  • lg

    15px

  • xl

    25px

  • full

    pill

Shadows & borders

shadow-sm

0 1px 2px rgb(0 0 0 / 0.05)

shadow-md

0 4px 12px -2px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.04)

shadow-lg

0 18px 40px -12px rgb(0 0 0 / 0.18)

Borders: rarely used · Surfaces: translucent

06

Layout

1224px container · 12 columns · 24px gutters

Patterns

  • Split hero: message left, supporting visual or product frame right.
  • Twelve-column grid; content blocks usually span 4, 6 or 8 columns.
  • Contained sections with consistent side gutters.
  • Reading text limited to roughly 65–72 characters per line.

Responsive principles

  • Below md, grids collapse to a single column and side gutters drop to 16px.
  • Type steps above h2 scale down one step on small screens.
  • Navigation collapses to a disclosure menu below lg.
  • Touch targets stay at least 44×44px on every breakpoint.

07

Motion

Durations and easing curves. Previews respect your reduced-motion setting.

  • fast
    110ms
  • base
    190ms
  • slow
    320ms
  • ease-standard

  • ease-enter

  • ease-exit

Principles

  • Motion is measured and calm, easing into place rather than snapping.
  • Animate opacity and transform only; avoid animating layout.
  • Respect prefers-reduced-motion by replacing movement with instant state changes or fades.

Astryx, its logo and trademarks belong to their owner and are shown only to say where this style comes from. This is our own study of their public website — not made or endorsed by Astryx. Use your own words and images.

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