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anthropic.com vs mercury.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
mercury.com
mercury.com· read 2026-08-09

Worth knowing

  • 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.

mercury.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

mercury.com

No named roles measured.

12 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

mercury.com

h1

49px · 480 · shown smaller

h2

42px · 480 · shown smaller

body

21px · 480

h3

16px · 400

button

16px · 420

small

12px · 480

Corners

Drawn at the measured radii.

anthropic.com

8px

8px

0px

mercury.com

4px

pill

40px

32px

32px

Spacing

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

anthropic.com

4
8
12
16
20
24
32
48

mercury.com

4
8
12
16
24
32
40
72

Depth

Shadows cast on each side's own ground.

anthropic.com

sm

mercury.com

sm

md

lg

Buttons

Rendered from the measured computed styles.

anthropic.com

default

mercury.com

default

The measured values behind the panels above.

anthropic.commercury.com

At a glance

Corners — these differSoftPill
Display size — these differ104px49px
Spacing base4px4px
Accent colours — these differ54
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#AFB2CE#9CB4E8#171721#272735#5266EB#0000#000000#EDEDF3#C3C3CC#FFFFFF#EBEBEB#F5F5F5
Semantic——

Typography

Families — these differAnthropic SansAnthropic SerifanthropicSerifanthropicSansarcadiaDisplayarcadia
h1 — these differ60.8653px · 700 · 66.9518px · Anthropic Sans49.3472px · 480 · 54.2819px · arcadiaDisplay
h2 — these differ60.8653px · 400 · 66.9518px · Anthropic Serif42px · 480 · 48.3px · arcadiaDisplay
h3 — these differ24px · 600 · 31.2px · Anthropic Sans16px · 400 · 24px · arcadia
body — these differ24px · 400 · 33.6px · Anthropic Serif21.008px · 480 · 25.2096px · arcadiaDisplay
list-item20px · 400 · 28px · Anthropic Serif—
link18px · 600 · 25.2px · Anthropic Serif—
span16px · 400 · 16px · Anthropic Sans—
button—16px · 420 · 16px · arcadia
h612px · 500 · 15px · Anthropic Sans—
label12px · 400 · 15px · Anthropic Sans—
small — these differ12px · 400 · 16.8px · anthropicSans12px · 480 · 16.8px · arcadia

Shape and rhythm

Radius — these differ0px 8px 8px 0px8px 0px 0px 8px8px4px32px32px 0px 0px 32px40px9999px
Spacing — these differ4px8px12px16px20px24px32px48px60px64px76px180px4px8px12px16px24px32px40px72px
Border widths1px1px

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(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(86, 86, 118, 0.1) 0px 0px 6px 0pxrgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(28, 28, 35, 0.02) 0px 10px 16px 0px, rgba(28, 28, 35, 0.04) 0px 6px 10px 0px, rgba(28, 28, 35, 0.09) 0px 0px 3px 0pxrgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.05) 0px 0px 3px 0px, rgba(0, 0, 0, 0.05) 0px 8px 12px 0px, rgba(0, 0, 0, 0.05) 0px 12px 20px 0px
Gradients——
Opacity — these differ0.010.340.500.240.70
Z-index — these differbase 1base 2base 3base 5dropdown 10sticky 101modal 1000modal 9999base 1base 2base 3base 5dropdown 10dropdown 20dropdown 99

Components

Sharedbuttonnavigationlinkbuttonnavigationlink
Only here — these differ—inputcard
Signature——

How this was measured

Differences here are ours, not the brands'.

Pages read2—
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.