Dust Tt
Ecosystem Index
Cool, clinical azure and slate, precise sans-serif geometry, expansive digital stillness.




Click any value to copy. Roles are suggestions, not gospel.
Read off the live site. Treat it as reference, not a recipe.
| Role | Family | Size | Weight | Leading | Tracking | Sample |
|---|---|---|---|---|---|---|
| h2 | Anthropic Serif | 56px | 330 | 1.2 | 0 | Aa Bb Cc |
| h3 | Anthropic Sans | 17px | 400 | 1.5 | 0 | Aa Bb Cc |
| body | Anthropic Sans | 16px | 400 | 1.5 | 0 | Aa Bb Cc |
| caption | Anthropic Sans | 14px | 500 | 1.43 | 0 | Aa Bb Cc |
| button | Anthropic Sans | 15px | 400 | 1.5 | 0 | Aa Bb Cc |
Max content width 1312px
:root {
--color-dominant: #0c7cf4;
--color-surface: #3c6c84;
--color-ink: #73d0f8;
--color-accent: #5490ac;
--color-detail: #e4d1ce;
}
/* CSS variables exposed by source */
:root {
--text-body: 14px;
--text-base--line-height: calc(1.5 / 1);
--font-mono: "Anthropic Mono", ui-monospace, monospace;
--font-sans-serif: "Anthropic Sans", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
--color-white: #fff;
--font-dyslexia: "OpenDyslexic", "Comic Sans MS", ui-serif, serif, "Comic Sans MS", ui-serif, Georgia, serif;
--radius-sm: .25rem;
--radius-md: .375rem;
--radius-lg: .5rem;
--bg-100: 60 14.2857% 97.2549%;
--bg-300: 45 11.7647% 93.3333%;
--accent-pro-100: 247.559 67.1958% 62.9412%;
--accent-pro-000: 248.807 48.4444% 44.1176%;
--text-sm: .875rem;
--text-footnote: 13px;
--text-300: 60 2.7523% 21.3725%;
--text-lg: 1.125rem;
--accent-pro-200: 247.559 67.1958% 62.9412%;
--bg-000: 0 0% 100%;
--font-user-message: "Anthropic Sans", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
--text-400: 42.8571 2.9289% 46.8627%;
--brand-900: 0 0% 0%;
--border-100: 60 1.6949% 11.5686%;
--radius: 8px;
--shadow-sm: 0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;
--text-6xl: 3.75rem;
--accent-pro-900: 247.059 89.4737% 92.549%;
--text-sm--line-height: calc(1.25 / .875);
--text-3xl--line-height: calc(2.25 / 1.875);
--text-3xl: 1.875rem;
--text-xs: .75rem;
--font-weight-medium: 500;
--font-weight-normal: 400;
--radius-card: calc(8px + 4px);
--bg-500: 50 11.1111% 89.4118%;
--text-base: 1rem;
--text-500: 42.8571 2.9289% 46.8627%;
--font-system: system-ui, sans-serif;
--text-000: 0 0% 7.451%;
--font-ui: "Anthropic Sans", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
--border-400: 60 1.6949% 11.5686%;
--text-200: 60 2.7523% 21.3725%;
--font-weight-bold: 600;
--accent-100: 213.117 67.5439% 44.7059%;
--brand-200: 14.7692 63.1068% 59.6078%;
--text-xs--line-height: calc(1 / .75);
--radius-2xl: 1rem;
--text-xl: 1.25rem;
--font-open-dyslexic: "OpenDyslexic", "Comic Sans MS", ui-serif, serif;
--text-2xl--line-height: calc(2 / 1.5);
--spacing: .25rem;
--text-xl--line-height: calc(1.75 / 1.25);
--bg-400: 50 11.1111% 89.4118%;
--color-emerald-500: lab(66.9756% -58.27 19.5419);
--shadow-panel: inset 0 0 0 0px hsl(from #0b0b0b h s l / 10%), 0 0 0 1px hsl(from #0b0b0b h s l / 10%), 0 8px 24px #0000001f, 0 2px 6px #00000014;
--color-black: #000;
--brand-000: 15.1111 54.2169% 51.1765%;
--text-2xl: 1.5rem;
--accent-000: 213.6 72.2543% 33.9216%;
--text-4xl--line-height: calc(2.5 / 2.25);
}Drop-in prompt
Build a landing page in the visual style of Claude.
Reference design system (extracted from the live site):
- Palette: #0c7cf4, #3c6c84, #73d0f8, #5490ac, #e4d1ce
- Typefaces: Anthropic Serif, Anthropic Sans
- Macrostructure: Ecosystem Index
Use the dominant colour for surfaces, the accent sparingly,
and lean on type weight + scale rather than colour for hierarchy.
Full DESIGN.md: https://inspomcp.dev/api/design/claude-ai