Design language comparison
Resend vs Spline
Both Resend and Spline commit to a dark-canvas approach, and they pair different display families (inter vs Spline Sans). Beyond surface, motion levels are both expressive.
Palette · side by side
Up to 8 dominant swatches eachSide A · dark
Resend
Full Page
#f0f0f0
background
#a0a0a0
foreground
#ffffff
background
#464a4d
foreground
#6c6c6c
foreground
#d6ebfd
background
#000000
foreground
#44ffa4
accent
Side B · dark
Spline
Full Page
#ffffff
background
#000000
foreground
#191a1d
foreground
#888888
foreground
#569cd6
accent
#0062ff
accent
#ce9178
accent
#6a9955
foreground
Typography · side by side
Primary family + weight ladder + sampleSide A · dark
Resend
Full Page
- Display
- aBCFavorit
- Body
- inter
- Mono
- commitMono
- Weights
- 400 · 500
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 · dark
Spline
Full Page
- Display
- Spline Sans
- Body
- ui-monospace
- Mono
- ui-monospace
- Weights
- 400 · 500
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 · dark
Resend
Full Page
- Base unit
- 4 px
- Container max
- 1280 px
Side B · dark
Spline
Full Page
- Base unit
- 4 px
- Container max
- 652 px
Motion vocabulary · side by side
Level + durations + easingsSide A · dark
Resend
Full Page
- Level
- expressive
- Libraries
- —
Durations
Easings
Side B · dark
Spline
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 92% (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, Resend's restraint reads as the safer default and Spline's rhythm provides the accent moments — pair them at section-level, not at component-level.