Design language comparison
Arc vs Notion
Arc runs a light-canvas system while Notion chose both, and they pair different display families (Marlin vs NotionInter). Beyond surface, motion divides them — Arc is subtle, Notion is expressive.
Palette · side by side
Up to 8 dominant swatches eachSide A · light
Arc
Full Page
#3139fb
brand
#000000
foreground
#fffcec
background
#ffffff
background
#696969
foreground
#210784
accent
#ff9999
accent
Side B · both
Notion
Full Page
#000000
foreground
#f6f5f4
background
#31302e
foreground
#a39e98
foreground
#0075de
accent
#615d59
foreground
#62aef0
accent
#f64932
accent
Typography · side by side
Primary family + weight ladder + sampleSide A · light
Arc
Full Page
- Display
- Marlin Soft SQ
- Body
- Marlin
- Mono
- ABC Favorit Mono
- Weights
- 500 · 700
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 · both
Notion
Full Page
- Display
- NotionInter
- Body
- NotionInter
- Weights
- 400 · 500 · 600 · 700
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
Arc
Full Page
- Base unit
- 4 px
- Container max
- 1440 px
Side B · both
Notion
Full Page
- Base unit
- 4 px
- Container max
- 1252 px
Motion vocabulary · side by side
Level + durations + easingsSide A · light
Arc
Full Page
- Level
- subtle
- Libraries
- —
Durations
Easings
Side B · both
Notion
Full Page
- Level
- expressive
- Libraries
- —
Durations
Easings
Palette & spacing overlap
Their palettes share 5% 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% (4, 6, 8, 10, 12 px shared) — a rhythm any agent can transfer between the two systems with minimal recalibration.
Shared swatches (1)
Curator verdict
Pick a side. Mixing Arc's light-first canvas with Notion's expressive motion vocabulary produces visual whiplash. Adopt one system as your primary, study the other for individual technique transfers (e.g. Arc's spacing, Notion's shadow).