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perplexity.ai vs slack.com

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

perplexity.ai
perplexity.ai· read 2026-08-09
slack.com
slack.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.

perplexity.ai

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.

slack.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.

perplexity.ai

No named roles measured.

14 more, no measured role

slack.com

No named roles measured.

18 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.

perplexity.ai

body

16px · 400

slack.com

h1

64px · 700 · shown smaller

h2

58px · 600 · shown smaller

h1

50px · 700 · shown smaller

h2

32px · 700

h3

24px · 700

body

20px · 400

body

18px · 400

Corners

Drawn at the measured radii.

perplexity.ai

pill

6px

11px

8px

12px

4px

slack.com

4px

16px

30px

pill

12px

Spacing

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

perplexity.ai

4
8
12
16
32
92

slack.com

8
16
20
24
32
36
40
72

Depth

Shadows cast on each side's own ground.

perplexity.ai

sm

md

lg

slack.com

sm

Buttons

Rendered from the measured computed styles.

perplexity.ai

default

slack.com

default

The measured values behind the panels above.

perplexity.aislack.com

At a glance

CornersPillPill
Display size — these differ16px64px
Spacing base — these differ4px8px
Accent colours77
Type families — these differ12
Components44

Full palette

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

All colours — these differ#271A00#0000#27251E#FFF0#016A71#A23544#DC6973#97431A#000000#D6D5D4#FDFBFA#FFFFFF#539E55#E10600#1264A3#FFEEAA#611F69#ACCE#4A154B#481A54#FBF3E0#D1F1FF#000000#1D1D1D#696969#FFFFFF#EAF5FE#F9F0FF#EBF7E6#FEF0F3#45C65A#FCC003
Semantic — these differSuccess #539E55Error/Danger #E10600Success #45C65AWarning #FCC003

Typography

Families — these differpplxSansSalesforce-SansSalesforce-Avant-Garde
h1—50px · 700 · 56px · Salesforce-Avant-Garde
h2—32px · 700 · 40px · Salesforce-Avant-Garde
h3—24px · 700 · 30px · Salesforce-Avant-Garde
body — these differ16px · 400 · 24px · pplxSans20px · 400 · 30px · Salesforce-Sans
input—16px · 400 · normal · Salesforce-Sans
span—15px · 700 · normal · Salesforce-Sans
button—15px · 400 · normal · Salesforce-Sans
link—14px · 700 · 18.004px · Salesforce-Sans
small—14px · 400 · 20.006px · Salesforce-Sans

Shape and rhythm

Radius — these differ4px6px8px11px12px9999px4px12px16px30px9999px
Spacing — these differ4px8px12px16px32px92px8px16px20px24px32px36px40px72px
Border widths1px1px

Depth

Strategy——
Shadows — these differrgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.08) 0px 1px 2px 0pxrgba(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 0px 1pxoklch(0.5525 0.085 207.66 / 0) 0px 0px 36px 4pxrgba(0, 0, 0, 0.1) 0px 0px 32px 0px
Gradients——
Opacity — these differ0.700.200.550.60
Z-index — these differbase 1dropdown 10dropdown 20dropdown 30sticky 500base 1base 2base 3base 4base 6dropdown 10dropdown 99sticky 100

Components

Sharedbuttoncardnavigationlinkbuttoncardnavigationlink
Only here——
Signature——

How this was measured

Differences here are ours, not the brands'.

Pages read—6
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.