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mercury.com vs spectr.pm

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

mercury.com: Online Business Banking For Startups, Small Businesses & Scaling Companies · Above the fold
mercury.com
mercury.com· read 2026-08-09
spectr.pm: Spectr - AI Product Ops: Meetings to PRDs, Specs & Stories · Above the fold
spectr.pm
spectr.pm· read 2026-10-14

Worth knowing

  • One side has no named colour roles, which means it predates role-based extraction. Re-generate it for a like-for-like 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.

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.

spectr.pm

Heading on canvas

Body copy in the measured muted role.

Primary action
18.6:1 ink on canvas

Palette

Named roles first, then every colour measured without one.

mercury.com

No named roles measured.

12 more, no measured role

spectr.pm

  • canvas#0D0D0D
  • surface#171717
  • ink#FAFAFA
  • hairline#2E2E2E
  • primary#894DEF
  • on-primary#FAFAFA

10 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.

mercury.com

h1

49px · 480 · shown smaller

h2

42px · 480 · shown smaller

body

21px · 480

h3

16px · 400

button

16px · 420

small

12px · 480

spectr.pm

hero-display

288px · 900 · shown smaller

display

280px · 900 · shown smaller

display

252px · 900 · shown smaller

display

200px · 900 · shown smaller

display

132px · 800 · shown smaller

display

99px · 600 · shown smaller

h2

92px · 800 · shown smaller

Corners

Drawn at the measured radii.

mercury.com

4px

pill

40px

32px

32px

spectr.pm

0px

Spacing

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

mercury.com

4
8
12
16
24
32
40
72

spectr.pm

4
8
12
16
24
28
32
40

Depth

Shadows cast on each side's own ground.

mercury.com

sm

md

lg

spectr.pm

sm

Buttons

Rendered from the measured computed styles.

mercury.com

default

spectr.pm

primaryfilledprimary-smtext

The measured values behind the panels above.

mercury.comspectr.pm

At a glance

Ground—Dark
Corners — these differPillSharp
Display size — these differ49px288px
Spacing base4px4px
Accent colours — these differ48
Type families22
Ink on canvas—18.6:1
Components — these differ511

Colour roles

primary—#894DEF
canvas—#0D0D0D
surface—#171717
ink—#FAFAFA
body—#B8B8B8
hairline—#2E2E2E
on-primary—#FAFAFA

Full palette

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

All colours — these differ#AFB2CE#9CB4E8#171721#272735#5266EB#0000#000000#EDEDF3#C3C3CC#FFFFFF#EBEBEB#F5F5F5#894DEF#A273F2#14532D#78350F#166534#4ADE80#92400E#FBBF24#0D0D0D#171717#FAFAFA#B8B8B8#2E2E2E#6B6B6B#000000#262626
Semantic——

Typography

Families — these differarcadiaDisplayarcadiaInter-e4c28016845df4efJetBrains Mono-33799697913f1f09
hero-display—288px · 900 · 288px · -11.52px · uppercase · Inter-e4c28016845df4ef
display—132px · 800 · 198px · -2.64px · Inter-e4c28016845df4ef
h1 — these differ49.3472px · 480 · 54.2819px · arcadiaDisplay72px · 800 · 72px · -2.52px · Inter-e4c28016845df4ef
h2 — these differ42px · 480 · 48.3px · arcadiaDisplay44px · 800 · 46.2px · -1.32px · Inter-e4c28016845df4ef
body — these differ21.008px · 480 · 25.2096px · arcadiaDisplay15px · 500 · 23.25px · 0px · Inter-e4c28016845df4ef
h3 — these differ16px · 400 · 24px · arcadia19px · 600 · 28.5px · 0px · Inter-e4c28016845df4ef
button — these differ16px · 420 · 16px · arcadia15px · 600 · 22.5px · 0px · Inter-e4c28016845df4ef
heading—16px · 600 · 24px · 0px · Inter-e4c28016845df4ef
list-item—16px · 500 · 24px · 0px · Inter-e4c28016845df4ef
link—14px · 500 · 20px · 0px · Inter-e4c28016845df4ef
code—13px · 600 · 19.5px · 1.82px · uppercase · JetBrains Mono-33799697913f1f09
small12px · 480 · 16.8px · arcadia—
caption—12px · 500 · 16.5px · 0px · Inter-e4c28016845df4ef

Shape and rhythm

Radius — these differ4px32px32px 0px 0px 32px40px9999px0px
Spacing — these differ4px8px12px16px24px32px40px72px4px8px12px16px24px28px32px40px44px48px64px144px
Border widths1px1px

Depth

Strategy—single-tier
Shadows — these differrgba(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 0pxrgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.1) 0px 10px 15px -3px, rgba(0, 0, 0, 0.1) 0px 4px 6px -4px
Gradients——
Opacity — these differ0.240.701.000.700.900.940.650.36
Z-index — these differbase 1base 2base 3base 5dropdown 10dropdown 20dropdown 99dropdown 10dropdown 50

Components

Sharedcardnavigationlinkcardnavigationlink
Only here — these differbuttoninputbutton-primarybutton-filledbutton-primary-smbutton-textbutton-text-2card-lgfooterlink-sm
Signature——

Interaction states

Read from each site's own stylesheets. An empty side means they were cross-origin and unreadable.

Measured — these differ—other:focus-visibleinput:hoverother:hovercard:hoverother:focusother:disablednav:hovernav:focus-visible

Responsive

Breakpoints — these differ—375→343px · 6col768→704px · 3col1024→960px · 5col1280→1216px · 5col1440→1376px · 5col

Themes

Measured on the live site, not derived.

Support—Single theme

How this was measured

Differences here are ours, not the brands'.

Pages read—6
Extracted — these differ2026-08-092026-10-14
Stylesheets—Readable
Roles unassigned—10

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