Foundation · stable · v1.0.0 · owner: Site system lead · contract 19 of 20 points (open: figma)
Reference
Source reference; not an executed check.
axe- 0
targets- 44 px
focus- --focus ring, 3 px
Do and don't
2 positive / 2 negative authored documentation examples (2 each required); 1 reference (1 required); 0 failed. References and failures do not count; this is not behavior acceptance.
Do: Name the destination
Authored by accessibility.tsRendered consumer example; not an executed correctness check. button Isolated document follows the browser's colour and contrast preferences. The outer theme toolbar does not control this document.
Open example: Accessibility · Do: Name the destination Use the full-page example to follow page links.
Do: State meaning beside its mark
Authored by accessibility.tsRendered consumer example; not an executed correctness check. band-word Isolated document follows the browser's colour and contrast preferences. The outer theme toolbar does not control this document.
Open example: Accessibility · Do: State meaning beside its mark Use the full-page example to follow page links.
Don't: Colour is the entire status message
Authored by accessibility.tsRule illustration; not an executed check. accessibility / a11y.colour-alone
<span style="background:var(--teal)"></span>
No status word or equivalent meaning is supplied.Don't: The only link content is a silent icon
Authored by accessibility.tsRule illustration; not an executed check. icon / icon.hidden-unless-labelled
<a href="/contact/"><svg aria-hidden="true">…</svg></a>
The link has no visible words or accessible name.Rules
| Rule | Why | Check |
|---|---|---|
| axe reports zero serious or critical issues on every page. | The floor is non-negotiable. | Automated: tests/site (axe) |
| Colour never carries meaning alone. | Colour-blind readers must get the same message. | Review: Accessibility owner: inspect each meaningful state for a shape or written equivalent in monochrome and forced colours; whole-system review remains unrun. tests/site/identity.spec.ts checks V4 state-badge visibility in forced colours. check-pages.ts checks composition and captions, not non-colour meaning. |
API
No props.
Contract details
The full contract: identity, anatomy, variants, states, tokens, layout, motion, accessibility, content, tests
Identity
| Aspect | Value |
|---|---|
| Id | accessibility |
| Layer | Foundations |
| Category | foundation |
| Owner | Site system lead |
| Status | stable |
| Version | 1.0.0 |
| Source | apps/showcase/site/system/foundations/accessibility.ts (private repository; the contract and the render function are this one module) |
| Version | Date | Change |
|---|---|---|
| 1.0.0 | 2026-10-26 | Accessibility as one module: its markup moved out of the page builder (scripts/site) into the system. |
Use when
- Every element. Why: Accessibility is part of the definition of done.
Do not use when
- Never waived. Why: Exceptions need a record with an expiry.
Anatomy
| Part | What it is |
|---|---|
| passport | Each contract's a11y block |
| checks | axe in Playwright, check-brand contrast, Lighthouse |
Made of: nothing (a base element).
Used in: pages directly.
Variants
| Variant | When | Why |
|---|---|---|
| light and dark | Every page, following the reader's setting. | The same roles resolve to light or dark values, so no element chooses its own. |
States
| State | Rendered or not applicable |
|---|---|
| default | The specimen. |
| hover | Not applicable: A foundation is not interactive. |
| focus-visible | Not applicable: Not focusable. |
| active | Not applicable: Not interactive. |
| disabled | Not applicable: Nothing to disable. |
| loading | Not applicable: Values are built into the stylesheet. |
| empty | Not applicable: The build fails if a value is missing. |
| error | Not applicable: Unresolved values fail the brand gate, not the reader. |
| current | Not applicable: No current item. |
| visited | Not applicable: Not a link. |
| expanded | Not applicable: Does not open. |
Tokens
| Part | Token |
|---|---|
| --focus | Focus ring |
| target | 44 px |
Layout
| Aspect | Value |
|---|---|
| breakpoints | Required review at 390, 768, 1024 and 1440 px; execution is not implied by this declaration; columns stack under 768 px; the wrap keeps a 16 px gutter on phones. |
| wrapping | Text wraps; nothing scrolls sideways. |
| textExpansion | Japanese runs 20 to 40% longer; headings break between phrases (jaBreaks) and blocks grow downwards. |
Spacing and rhythm
| Aspect | Value |
|---|---|
| internal | Not applicable: a foundation has no box of its own. |
| external | Not applicable. |
| rhythm | Applies to every element that reads it. |
Motion
| Aspect | Value |
|---|---|
| None | A foundation does not move. |
Runtime and reuse
Render-only element; mount any registered child enhancements separately. Preserve required Site CSS, fonts, responsive and locale rules from nativeElement.
Accessibility passport
| Aspect | Value |
|---|---|
| role | Not rendered on the site; its specimen in the Library is a list |
| name | The foundation's name |
| keyboard | Not interactive. |
| focus | Not focusable. |
| screenReader | The specimen is a plain list of names and values. |
| contrast | Every text and ground pair in the palette is checked (check-brand). |
| target | Not a target. |
Content
| Slot | Length | Voice |
|---|---|---|
| accessible names in consuming controls | The Button, Icon or other consuming contract's label budget | Name the action or destination in words. Preserve visible labels and programmatic names; a symbol or colour cannot replace them. |
| meaningful state text | BandWord uses one of its four names; other states follow their owning contract | State the meaning beside the mark. The accessibility specimen lists policy targets, not measured results for the current page. |
Good: “Book a conversation (Button's visible action name)” · “Holding together (BandWord's word beside its dyed mark)”
Bad: “An arrow alone as a button name” · “A health state shown only by a coloured dot”
Japanese: Translate control names, state words and hidden text through their consuming component's existing Japanese source. Retain English technical identifiers and explicitly English output. Check names and reading order in Japanese; this policy specimen is not a locale API, an assistive-technology result or completed native review.
Icons and illustrations
None: this element uses no icon or illustration of its own.
Decisions and exceptions
- None.
Usage
26 owned-class occurrences in built pages plus metadata-token references in built CSS (measured by npm run site:system).
No application mechanism is declared.
Current check result: not assessed by this report. Declarations and source-file presence do not establish executed enforcement or accepted coverage.
Tests
| Aspect | Value |
|---|---|
| unit | tests/unit/site-system.test.ts: renders every do and don't example through the registry and checks the classes it owns |
| visual | Not yet: there are no screenshot baselines; the Library page is checked for sideways scroll at 1440 px by tests/site/system.spec.ts |
| a11y | tests/site/system.spec.ts: axe (0 serious or critical) on the element's Library page in light and dark |
| parity | scripts/site/system/check.ts: Library examples are rendered by the same render function the site imports |
Figma
not-yet: The Loom Site Figma library is the last stage of the plan; this element is not mapped yet.