DesignMD
Discover
Discover

linear.app vs spectr.pm

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

linear.app: Linear – The system for product development · Above the fold
linear.app
linear.app· 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.

linear.app

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.

linear.app

No named roles measured.

16 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.

linear.app

h2

72px · 510 · shown smaller

h1

64px · 510 · shown smaller

h2

48px · 510 · shown smaller

h1

48px · 590 · shown smaller

h1

40px · 510 · shown smaller

h3

24px · 590

h3

20px · 590

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.

linear.app

4px

pill

6px

12px

8px

pill

spectr.pm

0px

Spacing

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

linear.app

4
8
12
16
20
24
32
40

spectr.pm

4
8
12
16
24
28
32
40

Depth

Shadows cast on each side's own ground.

linear.app

sm

md

spectr.pm

sm

Buttons

Rendered from the measured computed styles.

linear.app

default

spectr.pm

primaryfilledprimary-smtext

The measured values behind the panels above.

linear.appspectr.pm

At a glance

Ground—Dark
Corners — these differPillSharp
Display size — these differ72px288px
Spacing base4px4px
Accent colours — these differ28
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#62666D#08090A#0F1011#0003#0009#0000#F91880#00BA7C#F7F8F8#8A8F98#FFFFFF#D0D6E0#3E3E44#000000#E5E5E6#18191A#894DEF#A273F2#14532D#78350F#166534#4ADE80#92400E#FBBF24#0D0D0D#171717#FAFAFA#B8B8B8#2E2E2E#6B6B6B#000000#262626
Semantic——

Typography

Families — these differInter VariableBerkeley MonoInter-e4c28016845df4efJetBrains Mono-33799697913f1f09
hero-display—288px · 900 · 288px · -11.52px · uppercase · Inter-e4c28016845df4ef
display—132px · 800 · 198px · -2.64px · Inter-e4c28016845df4ef
h1 — these differ64px · 510 · 64px · Inter Variable72px · 800 · 72px · -2.52px · Inter-e4c28016845df4ef
h2 — these differ48px · 510 · 48px · Inter Variable44px · 800 · 46.2px · -1.32px · Inter-e4c28016845df4ef
h3 — these differ24px · 590 · 31.92px · Inter Variable19px · 600 · 28.5px · 0px · Inter-e4c28016845df4ef
span16px · 400 · 24px · Inter Variable—
h416px · 590 · 24px · Inter Variable—
heading—16px · 600 · 24px · 0px · Inter-e4c28016845df4ef
list-item—16px · 500 · 24px · 0px · Inter-e4c28016845df4ef
body — these differ15px · 400 · 24px · Inter Variable15px · 500 · 23.25px · 0px · Inter-e4c28016845df4ef
link — these differ14px · 510 · 21px · Inter Variable14px · 500 · 20px · 0px · Inter-e4c28016845df4ef
label14px · 400 · 21px · Inter Variable—
code — these differ14px · 400 · 21px · Berkeley Mono13px · 600 · 19.5px · 1.82px · uppercase · JetBrains Mono-33799697913f1f09
input13.3333px · 400 · normal · Inter Variable—
button — these differ13px · 400 · 19.5px · Inter Variable15px · 600 · 22.5px · 0px · Inter-e4c28016845df4ef
caption—12px · 500 · 16.5px · 0px · Inter-e4c28016845df4ef

Shape and rhythm

Radius — these differ4px6px8px12px9999px0px
Spacing — these differ4px8px12px16px20px24px32px40px48px56px76px96px4px8px12px16px24px28px32px40px44px48px64px144px
Border widths1px1px

Depth

Strategy—single-tier
Shadows — these differrgba(0, 0, 0, 0.4) 0px 1px 0px 0pxrgba(255, 255, 255, 0.03) 0px 0px 0px 1px inset, rgba(255, 255, 255, 0.04) 0px 1px 0px 0px inset, rgba(0, 0, 0, 0.6) 0px 0px 0px 1px, rgba(0, 0, 0, 0.1) 0px 4px 4px 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 differ0.300.600.400.700.800.901.000.700.900.940.650.36
Z-index — these differbase 1base 2base 3dropdown 50sticky 100sticky 995sticky 996sticky 997dropdown 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 read66
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.