Design language comparison
Cal.com vs GitBook
Both Cal.com and GitBook commit to a light-canvas approach, and they share a typographic family — sans-serif. Beyond surface, motion levels are both moderate.
Palette · side by side
Up to 8 dominant swatches eachSide A · light
Cal.com
Full Page
#000000
foreground
#242424
foreground
#898989
background
#ffffff
background
#0000ee
accent
#e0e0e0
background
#e5e7eb
background
#374151
foreground
Side B · light
GitBook
Full Page
#000000
foreground
#0000ee
brand
#57534d
foreground
#79716b
foreground
#ffffff
background
#fe551b
accent
Typography · side by side
Primary family + weight ladder + sampleSide A · light
Cal.com
Full Page
- Display
- Cal Sans UI Variable Light
- Body
- sans-serif
- Weights
- 300
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
GitBook
Full Page
- Display
- General Sans Variable Variable Bold
- Body
- sans-serif
- Mono
- Geist Mono
- Weights
- 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
Cal.com
Full Page
- Base unit
- 4 px
- Container max
- 1280 px
Side B · light
GitBook
Full Page
- Base unit
- 4 px
- Container max
- 1160 px
Motion vocabulary · side by side
Level + durations + easingsSide A · light
Cal.com
Full Page
- Level
- moderate
- Libraries
- Framer Motion
Durations
Easings
Side B · light
GitBook
Full Page
- Level
- moderate
- Libraries
- Framer Motion
Durations
Easings
Palette & spacing overlap
Their palettes share 20% 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 92% (2, 4, 6, 8, 10 px shared) — a rhythm any agent can transfer between the two systems with minimal recalibration.
Shared swatches (3)
Curator verdict
If you are building an interface that needs to reference both, Cal.com's restraint reads as the safer default and GitBook's rhythm provides the accent moments — pair them at section-level, not at component-level.