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Design language comparison

Clerk vs PostHog

Two references, one frame. Palette, typography and the curator verdict for Clerk and PostHog, read side by side.

Palette & spacing overlap

Palette

Shared (2)

#000000#ffffff

Clerk only

#d9d9de#131316#747686#5e5f6e#2f3037#9394a1#5de3ff#42434d#ef4444#6c47ff#b7b8c2#ffc107#4caf50#1976d2

PostHog only

#4d4f46#374151#9ea096#111827#65675e#f7a501#bfc1b7#2f80fa#1a1a1a#30abc6#b62ad9#e1d7c2#b17816#36c46f#6aa84f#bab1ff#fdfdf8#fffefe

Spacing scale (px)

Shared (8)

4px6px8px10px12px14px20px24px

Clerk only

1px16px28px30px

PostHog only

2px17px32px34px

Typography

Display / body / mono + weight ladder

Side A · Light

Clerk

Display
geistNumbers
Body
ui-sans-serif
Mono
soehneMono

Weight ladder

400500

Side B · Light

PostHog

Display
Open Runde
Body
IBM Plex Sans Variable
Mono
ui-monospace

Weight ladder

400500600700800

Spacing scale

Base unit + container + first 8 steps

Side A · Light

Clerk

Base unit
4 px
Container
1280 px
1px
4px
6px
8px
10px
12px
14px
16px

Side B · Light

PostHog

Base unit
4 px
Container
320 px
2px
4px
6px
8px
10px
12px
14px
17px

Motion vocabulary

Level + libraries + durations + easings

Side A · Light

Clerk

Level
moderate
Libraries
Framer Motion

Durations

150ms300ms450ms500ms

Easings

cubic-bezier(0.33, 1, 0.6...cubic-bezier(0.4, 0.36, 0...cubic-bezier(0.4, 0, 0.2, 1)

Side B · Light

PostHog

Level
expressive
Libraries
-

Durations

0.15s0.3s3s4s4.9s5.8s

Easings

cubic-bezier(0.4, 0, 0.2, 1)cubic-bezier(0.16, 1, 0.3...ease-in-outlinear