Design language comparison
Contra vs PostHog
Both Contra and PostHog commit to a light-canvas approach, and they pair different display families (GT Standard M vs Open Runde). Beyond surface, motion levels are both expressive.
Palette · side by side
Up to 8 dominant swatches eachSide A · light
Contra
Full Page
#14171f
foreground
#ffffff
background
#677084
foreground
#373f51
foreground
#d0d4dc
foreground
#000000
foreground
#9ba2b0
foreground
#e5e7eb
neutral
Side B · light
PostHog
Full Page
#4d4f46
foreground
#000000
foreground
#374151
foreground
#9ea096
neutral
#111827
foreground
#65675e
foreground
#f7a501
accent
#bfc1b7
neutral
Typography · side by side
Primary family + weight ladder + sampleSide A · light
Contra
Full Page
- Display
- GT Standard L
- Body
- GT Standard M
- Weights
- 400 · 500 · 600
Sample
The quick brown fox jumps over the lazy dog.
1234567890 — Body sample renders in the captured family if your browser has it; otherwise system fallback signals the weight ladder.
Side B · light
PostHog
Full Page
- Display
- Open Runde
- Body
- IBM Plex Sans Variable
- Mono
- ui-monospace
- Weights
- 400 · 500 · 600 · 700 · 800
Sample
The quick brown fox jumps over the lazy dog.
1234567890 — Body sample renders in the captured family if your browser has it; otherwise system fallback signals the weight ladder.
Spacing scale · side by side
Base unit + first 8 scale valuesSide A · light
Contra
Full Page
- Base unit
- 4 px
- Container max
- 1848 px
Side B · light
PostHog
Full Page
- Base unit
- 4 px
- Container max
- 320 px
Motion vocabulary · side by side
Level + durations + easingsSide A · light
Contra
Full Page
- Level
- expressive
- Libraries
- —
Durations
Easings
Side B · light
PostHog
Full Page
- Level
- expressive
- Libraries
- —
Durations
Easings
Palette & spacing overlap
Their palettes share 10% of swatches at the dominant tier — a quiet signal both teams drew from the same neutral library before applying brand accents. Their spacing scales overlap by 75% (2, 4, 6, 8, 10 px shared) — a rhythm any agent can transfer between the two systems with minimal recalibration.
Shared swatches (2)
Curator verdict
If you are building an interface that needs to reference both, Contra's restraint reads as the safer default and PostHog's rhythm provides the accent moments — pair them at section-level, not at component-level.