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Design language comparison

Obsidian OS vs Slash

Obsidian OS runs a light-canvas system while Slash chose both, and they pair different display families (sans-serif vs __Inter_f367f3). Beyond surface, motion divides them — Obsidian OS is moderate, Slash is expressive.

Palette · side by side

Up to 8 dominant swatches each

Side A · light

Obsidian OS

Full Page

#000000

foreground

#ffffff

background

#0000ee

brand

#1d1d1d

foreground

#ff5700

accent

#0d0d10

foreground

#67d243

accent

#383838

background

Side B · both

Slash

Full Page

#ffffff

background

#e2e3e9

foreground

#000000

foreground

#9194a1

foreground

#777a88

foreground

#1c1d22

foreground

#5e616e

background

#cc9166

accent

Typography · side by side

Primary family + weight ladder + sample

Side A · light

Obsidian OS

Full Page

Display
Ivory LL TT 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 · both

Slash

Full Page

Display
__Inter_f367f3
Body
__ivyPresto_6eafe2
Weights
300 · 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.

Spacing scale · side by side

Base unit + first 8 scale values

Side A · light

Obsidian OS

Full Page

Base unit
4 px
Container max
1512 px
2px
6px
8px
10px
12px
16px
20px
24px

Side B · both

Slash

Full Page

Base unit
4 px
Container max
704 px
2px
4px
6px
8px
10px
12px
14px
16px

Motion vocabulary · side by side

Level + durations + easings

Side A · light

Obsidian OS

Full Page

Level
moderate
Libraries
Framer Motion

Durations

0.1s

Easings

cubic-bezier(0.4, 0, 0.2, 1)ease-outease

Side B · both

Slash

Full Page

Level
expressive
Libraries
Framer Motion

Durations

75ms150ms200ms300ms

Easings

cubic-bezier(0.4, 0, 0.2, 1)

Palette & spacing overlap

Their palettes share 22% 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 67% (2, 6, 8, 10, 12 px shared) — a rhythm any agent can transfer between the two systems with minimal recalibration.

Shared swatches (2)

#000000#ffffff

Curator verdict

Pick a side. Mixing Obsidian OS's light-first canvas with Slash's expressive motion vocabulary produces visual whiplash. Adopt one system as your primary, study the other for individual technique transfers (e.g. Obsidian OS's spacing, Slash's shadow).

Full Obsidian OS brief →Full Slash brief →Back to gallery

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