Cathryn Lavery
53bd8dde0f
Thirteen editorial diagram types (architecture, flowchart, sequence, state, ER, timeline, swimlane, quadrant, nested, tree, layers, venn, pyramid) as self-contained HTML files with inline SVG. Progressive disclosure: lean SKILL.md points to per-type references. Neutral stone+rust default skin, first-run gate that prompts users to customize the style guide from their own website, URL-based onboarding, annotation-callout primitive, sketchy filter variant, live gallery at assets/index.html.
1.6 KiB
1.6 KiB
Venn / Set Overlap
Best for: intersection of concepts/domains, shared attributes between categories, "where A meets B", ikigai-style frames (desirable × feasible × viable).
Layout conventions
- Prefer 2 or 3 circles. Avoid 4+ (unreadable — use a matrix instead).
- Circle stroke: 1px hairline, color per-set (ink, muted, soft).
- Circle fill: very low-opacity tint —
rgba(11,13,11,0.04)for ink set,rgba(82,83,78,0.05)for muted. Tints compound naturally in overlap regions. - Radii: equal when sets are comparable in size; proportional when sets are meaningfully different. Don't fake equal sizes for aesthetics.
- Set labels placed outside the circle, NEVER crossing the stroke. Geist 12–14px 600 for the set name, optional Geist Mono 9px sublabel.
- Intersection labels placed inside the overlap region, Geist 12px 600, centered. For small overlaps, use a leader line to a label in clear space.
- Coral accent on the ONE focal intersection — the "sweet spot". Either coral label stroke OR clipPath-bounded coral fill tint (
rgba(247,89,31,0.10)). - Circle centers and radii divisible by 4.
Anti-patterns
- Unlabeled regions — reader can't tell which set is which.
- Circles that don't overlap when overlap is the point.
- Equal-sized circles when sets are obviously different (dishonest).
- Coral on multiple overlap regions (focal signal dies).
- Labels sitting on top of circle strokes (illegible).
- 4+ circles where 2–3 would do.
Examples
assets/example-venn.html— minimal lightassets/example-venn-dark.html— minimal darkassets/example-venn-full.html— full editorial