Design System Inspiration of Claude

Anthropic's warm-canvas editorial interface. Cream + coral + dark navy as the trinity. Slab-serif display headlines, humanist sans body, and dark code-mockup cards as product chrome.

# Generate a thoughtful response
from anthropic import Anthropic

client = Anthropic()
message = client.messages.create(
    model="claude-opus-4",
    max_tokens=1024,
    messages=[{
        "role": "user",
        "content": "Hello, Claude"
    }]
)
01 — Color Palette

Cream + coral + dark navy

The trinity. Cream canvas as the editorial floor, coral as the brand voltage, dark navy as the product-chrome surface. No fourth surface tone.

Brand

primary (coral)
#cc785c
All primary CTAs and full-bleed callout cards.
primary-active
#a9583e
Press state on coral buttons.
accent-teal
#5db8a6
Status indicators, "active connection" dots.
accent-amber
#e8a55a
Category badges, inline highlights.

Surface

canvas (cream)
#faf9f5
Default page floor — tinted cream, deliberately not pure white.
surface-soft
#f5f0e8
Section dividers, soft band backgrounds.
surface-card
#efe9de
Feature cards, content cards.
surface-dark
#181715
Code editor mockups, model cards, footer.
surface-dark-elevated
#252320
Elevated cards inside dark bands.
hairline
#e6dfd8
1px borders on cream surfaces.

Text

ink
#141413
Headlines and primary text. Warm dark.
body
#3d3d3a
Default running-text.
muted
#6c6a64
Sub-headings, breadcrumbs, footer.
muted-soft
#8e8b82
Captions, fine-print, copyright.
on-dark
#faf9f5
Cream-tinted white on dark surfaces.
on-dark-soft
#a09d96
Footer body — slightly muted on dark.
02 — Typography

Copernicus serif + StyreneB sans

Slab-serif display for headlines (substituted with EB Garamond), humanist sans for body (Inter). The serif character is the editorial brand voice — switching to sans display would flatten Anthropic into another AI tool.

display-xl64px / 400 / 1.05 / -1.5px
Copernicus serif
Meet your thinking partner
display-lg48px / 400 / 1.1 / -1px
For the curious, the careful, the brilliant
display-md36px / 400 / 1.15 / -0.5px
Build with Claude
display-sm28px / 400 / 1.2 / -0.3px
Pricing for every team
title-lg22px / 500 / 1.3
StyreneB sans
Pro · $20 / month
title-md18px / 500 / 1.4
Code understanding at depth
title-sm16px / 500 / 1.4
Connect Slack workspace
body-md16px / 400 / 1.55
Claude reasons through complex problems with the patience and care of a thoughtful colleague — drawing on context across long conversations and large codebases.
body-sm14px / 400 / 1.55
Footer body, fine-print legal text — same Inter face at smaller size.
caption13px / 500 / 1.4
Limited beta · Available in API
caption-uppercase12px / 500 / 1.5px
NEW · CLAUDE OPUS 4
code14px / 400 / 1.6
JetBrains Mono
claude.messages.create({ model: "opus" })
button14px / 500 / 1.0
Try Claude
nav-link14px / 500 / 1.4
Product · Solutions · Use Cases · Pricing · Research
03 — Button Variants

Coral primary, cream secondary

Coral CTAs only. Secondary buttons are cream-canvas with hairline outline. Dark surfaces get a slightly elevated dark button.

button-primary
primary coral / on-primary white / md radius
button-primary-active
primary-active darker coral
button-primary-disabled
cream-tinted disabled fill
button-secondary
cream / ink / hairline outline
button-secondary-on-dark
surface-dark-elevated / on-dark
button-text-link
No background; inline link-style
text-link-coral
Read the research →
Inline coral link in body. The signature small detail.
button-icon-circular
36 × 36 / canvas / hairline / full radius
04 — Cards & Containers

Cream cards + dark mockups + coral callouts

Reason through complexity

Claude excels at multi-step reasoning, drawing on long context to think through problems carefully.

📚

Code understanding

From small refactors to large codebase migrations, Claude reads code with the depth of a senior engineer.

🛡️

Safe by design

Built with constitutional AI training to be helpful, harmless, and honest across diverse use cases.

refactor.py · agent
async def migrate(file):
    code = """..."""
    # Claude reads, plans, and rewrites
    return claude.refactor(code)

Opus 4

Our most intelligent model for complex agentic tasks and long-horizon reasoning.

View capabilities →

Sonnet 4

Balanced speed and capability — the everyday workhorse for production systems.

View capabilities →
05 — Coral Callout Card

Start building with Claude

Free API credits to get started. Production-grade reliability when you scale. Cream-button CTA on the coral surface.

06 — Connector Tile Grid

Connect everything Claude needs

Google Drive

Read, summarize, draft — across all your Drive docs.

Slack

Bring Claude into your team conversations.

Notion

Search, edit, and reorganize your knowledge base.

GitHub

Review PRs, run agentic refactors, fix issues.

Linear

Triage tickets and draft responses in your team's voice.

Figma

Read design specs and translate them to working code.

07 — Pricing Tiers

Free

$0
  • Limited daily messages
  • Web access
  • Mobile + desktop apps

Pro

$20
  • 5× more usage
  • Project workspaces
  • Advanced research

Enterprise

Custom
  • SOC 2 + HIPAA
  • SSO + IDP
  • Custom integrations
08 — Form Elements
09 — Badges

Pill badges in cream-card or coral fill. Coral-uppercase for "NEW" / "BETA" emphasis.

Featured Limited beta NEW BETA CLAUDE 4
10 — Spacing Scale
xxs · 4px
xs · 8px
sm · 12px
md · 16px
lg · 24px
xl · 32px
xxl · 48px
section · 96px
11 — Border Radius Scale
4 · xs
6 · sm
8 · md
12 · lg
16 · xl
pill
full
12 — Elevation & Depth

Color-block first, shadow rare. The cream-vs-dark contrast does most of the elevation work.

Flat / Canvas

Body sections, top nav.

Cream card

Feature cards, content cards.

Dark mockup card

Code editors, model cards, footer.

Coral callout

Full-bleed CTA card with cream-button inside.

Card with hairline

Cream card with 1px hairline border.

Coral focus ring

3px coral at 20% alpha around focused inputs.

13 — Responsive Behavior
NameWidthKey Changes
Mobile< 768pxHamburger nav; hero h1 64→32px; hero-art stacks below; feature grids 1-up; pricing 1-up.
Tablet768–1024pxTop nav tightens; feature cards 2-up; connector tiles 3-up; pricing 2-up.
Desktop1024–1440pxFull top-nav; 3-up feature cards; 4-6 up connector tiles; 4-up pricing.
Wide> 1440pxSame as desktop with more breathing room; max content 1200px.
375
mobile
600
small phone
768
tablet
1024
laptop
1280
desktop
1440
wide

Touch Targets

Collapsing Strategy