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anthropic.com vs github.com

Two design systems side by side, measured from the live sites — colour, type, shape, depth, components, states and responsive behaviour.

anthropic.com
anthropic.com· read 2026-08-09
github.com
github.com· read 2026-08-09

Worth knowing

  • Extraction depth differs: 2 pages against 6. The deeper read will usually show more tokens.
  • Neither side has named colour roles, so both predate role-based extraction. Re-generating either one fills in the palette comparison.
  • Interaction states are missing on at least one side — that site's stylesheets were cross-origin and could not be read.

Ground and ink

Each side painted in its own measured canvas, ink, muted and primary roles.

anthropic.com

No colour roles measured on this side, so there is no ground to paint. The palette below is still real; re-extracting the site fills this in.

github.com

No colour roles measured on this side, so there is no ground to paint. The palette below is still real; re-extracting the site fills this in.

Palette

Named roles first, then every colour measured without one.

anthropic.com

No named roles measured.

16 more, no measured role

github.com

No named roles measured.

16 more, no measured role

Type scale

Set at the measured size, weight, tracking and leading. Brand typefaces are not loaded, so the metrics are real and the letterforms are not.

anthropic.com

h1

104px · 300 · shown smaller

h1

61px · 700 · shown smaller

h2

61px · 400 · shown smaller

h3

24px · 600

body

24px · 400

list-item

20px · 400

link

18px · 600

github.com

h1

64px · 425 · shown smaller

h1

64px · 800 · shown smaller

h1

56px · 440 · shown smaller

h3

40px · 460 · shown smaller

body

28px · 480

h2

24px · 600

h3

22px · 480

Corners

Drawn at the measured radii.

anthropic.com

8px

8px

0px

github.com

6px

8px

12px

60px

16px

16px

Spacing

One shared scale across both sides, so the bars are directly comparable.

anthropic.com

4
8
12
16
20
24
32
48

github.com

4
8
12
16
20
24
32
40

Depth

Shadows cast on each side's own ground.

anthropic.com

sm

github.com

sm

md

lg

xl

Buttons

Rendered from the measured computed styles.

anthropic.com

default

github.com

default

The measured values behind the panels above.

anthropic.comgithub.com

At a glance

Corners — these differSoftRounded
Display size — these differ104px64px
Spacing base4px4px
Accent colours — these differ53
Type families — these differ42
Components — these differ35

Full palette

Every colour each extraction kept, including the ones with no measured role.

All colours — these differ#D97757#E3DACC#C6613F#788C5D#BCD1CA#6A9BCC#C46686#EBCECE#141413#FAF9F5#B0AEA5#000000#C6C4BA#87867F#0F0F0E#73726C#0000#010409#58635B#1F2328#FFF0#25292E#59636E#656C76#000000#FFFFFF#F0F6FC#D1D9E0#9198A1#D2D9D4#CF222E#D29922
Semantic — these differ—Error/Danger #CF222EWarning #D29922

Typography

Families — these differAnthropic SansAnthropic SerifanthropicSerifanthropicSansMona Sans VFMona Sans
h1 — these differ60.8653px · 700 · 66.9518px · Anthropic Sans56px · 440 · 61.6px · Mona Sans
h2 — these differ60.8653px · 400 · 66.9518px · Anthropic Serif24px · 600 · 36px · Mona Sans VF
h3 — these differ24px · 600 · 31.2px · Anthropic Sans22px · 480 · 30.8px · Mona Sans
body — these differ24px · 400 · 33.6px · Anthropic Serif18px · 400 · 27px · Mona Sans
list-item20px · 400 · 28px · Anthropic Serif—
link18px · 600 · 25.2px · Anthropic Serif—
span — these differ16px · 400 · 16px · Anthropic Sans14px · 400 · 21px · Mona Sans VF
button—16px · 400 · 24px · Mona Sans VF
h4—14px · 600 · 21px · Mona Sans
h612px · 500 · 15px · Anthropic Sans—
label — these differ12px · 400 · 15px · Anthropic Sans16px · 400 · 24px · Mona Sans
small12px · 400 · 16.8px · anthropicSans—

Shape and rhythm

Radius — these differ0px 8px 8px 0px8px 0px 0px 8px8px6px8px12px16px 0px 0px16px60px
Spacing — these differ4px8px12px16px20px24px32px48px60px64px76px180px4px8px12px16px20px24px32px40px48px64px80px128px
Border widths — these differ1px1px2px

Depth

Strategy——
Shadows — these differrgba(0, 0, 0, 0.01) 0px 2px 2px 0px, rgba(0, 0, 0, 0.02) 0px 4px 4px 0px, rgba(0, 0, 0, 0.04) 0px 16px 24px 0pxrgba(209, 217, 224, 0.25) 0px 0px 0px 1px, rgba(37, 41, 46, 0.04) 0px 6px 12px -3px, rgba(37, 41, 46, 0.12) 0px 6px 18px 0pxrgba(0, 0, 0, 0.01) 0px 100px 80px 0px, rgba(0, 0, 0, 0.02) 0px 41px 33px 0px, rgba(0, 0, 0, 0.02) 0px 22px 17px 0px, rgba(0, 0, 0, 0.03) 0px 12px 10px 0px, rgba(0, 0, 0, 0.04) 0px 6px 5px 0px, rgba(0, 0, 0, 0.07) 0px 2px 2px 0pxrgba(0, 0, 0, 0.15) 0px 0px 0px 1px insetrgba(209, 217, 224, 0) 0px 0px 0px 1px, rgba(37, 41, 46, 0.32) 0px 56px 112px 0px
Gradients——
Opacity — these differ0.010.340.500.500.600.080.300.570.58
Z-index — these differbase 1base 2base 3base 5dropdown 10sticky 101modal 1000modal 9999base 1base 2base 3dropdown 32dropdown 91dropdown 92dropdown 98dropdown 99

Components

Sharedbuttonnavigationlinkbuttonnavigationlink
Only here — these differ—inputcard
Signature——

How this was measured

Differences here are ours, not the brands'.

Pages read — these differ26
Extracted2026-08-092026-08-09
Stylesheets——
Roles unassigned——

Measured by DesignMD from the live sites. Compare two others. Generate a DESIGN.md for your own site.