Observablehq — Design Score: 89/100 (grade A)
Typography & motion are bulletproof; spacing grid exists but only 58% of elements follow it—biggest leak is spacing discipline, not craft.
This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/score/observablehq.com.
The four measured dimensions
- Typography & Hierarchy: 96/100
- Color & Contrast: 85/100
- Spacing & Layout: 74/100
- Motion & Polish: 100/100
What we measured
- Typography & Hierarchy — type ladder rhythm: 1.40× · 2.00× · 1.11× (31.1/35)
- Typography & Hierarchy — weight contrast: [400, 500, 600, 700] (spread 300) (20.0/20)
- Typography & Hierarchy — body line-height: 1.40 (15.0/15)
- Typography & Hierarchy — heading line-height: 1.14 (10.0/10)
- Typography & Hierarchy — size discipline: 4 (20.0/20)
- Color & Contrast — body text contrast (WCAG): 19.26:1 (30.0/30)
- Color & Contrast — primary button contrast: 17.04:1 (10.0/10)
- Color & Contrast — accent discipline: 3 (20.0/20)
- Color & Contrast — surface coverage: 47% dominant (14.6/20)
- Color & Contrast — scheme consistency: light (10.0/20)
- Spacing & Layout — spacing grid: 8px grid · 90% confidence (31.5/35)
- Spacing & Layout — grid adherence: 7/12 on 8px (14.6/25)
- Spacing & Layout — structure & responsive: 2 breakpoints (15.0/15)
- Motion & Polish — motion tokens: 200ms dominant (25.0/25)
- Motion & Polish — choreography: 3 reveal candidates (20.0/20)
Every line above is read from the live DOM — the exact contrast ratio, the detected spacing grid, the forced hover states — not an AI's guess from a screenshot.
Top fixes
- Enforce 8px grid adherence across all components
- Increase surface color depth or accent saturation to balance dominant neutral
- Smooth type ladder jumps at mid-sizes
The comprehensive report — every fix with why + the exact how-to — is part of Mozaika Pro.
An automated measurement of Observablehq's publicly-visible design (color, type, spacing, motion) — not affiliated with observablehq.com. Removal requests: hello@mozaika.design.