@polyxd/ds-material3

@polyxd/ds-material3

The Material 3 design-system pack for Polyxd. It has DTCG 2025.10 token files that satisfy the Polyxd semantic token contract (packages/spec/tokens/semantic-contract.json, v0.1.0) in light and dark modes.

npm run check -w @polyxd/ds-material3     # contract check, both modes
npm run generate -w @polyxd/ds-material3  # regenerate tokens/*.json

Tiers

The M3 names are kept as they are, so you can trace every semantic token back to Material 3.

Tier	File	Contents
Reference (primitive)	tokens/primitive.json	md.ref.palette.<palette>.<tone> (primary, secondary, tertiary, neutral, neutral-variant, error), md.ref.typeface.*. Polyxd additions: polyxd.ref.palette.{success,warning,info,chart-1..6} and polyxd.ref.space.N (the 4dp grid, N × 4px).
System	tokens/system.json	Values that are the same in every mode: md.sys.typescale.*, md.sys.shape.*, md.sys.motion.*, md.sys.state.*, md.sys.elevation.level0..5, and polyxd.sys.elevation.shadow.level1..5 (M3 elevation shown as DTCG shadows).
System, per mode	tokens/system.light.json, tokens/system.dark.json	md.sys.color.* (all 49 material-web v0_192 roles), each an alias to a reference-palette tone. Polyxd additions: polyxd.sys.color.{success,on-success,success-container,on-success-container,…,chart-1..6}.
Semantic	tokens/semantic.json	The Polyxd contract tokens. Wherever M3 has an equivalent, the token is an {alias} to an md.sys.* / md.ref.* token. The file is the same in both modes; aliases pick up the mode's system file.

manifest.json merges the files for each mode in this order: primitive → system → system. → semantic.

The main semantic mappings are:

• Surfaces: surface, surface-container (subtle), surface-container-low (raised: the elevated card), surface-container-high (overlay: the dialog), and inverse-surface.
• Text: on-surface, on-surface-variant (muted), inverse-on-surface, and primary (links).
• Borders: outline-variant, outline (strong), and secondary (focus, as in material-web's focus ring).
• Actions: primary is primary/on-primary. Secondary is secondary-container/on-secondary-container (tonal button), with an outline border. Danger is error/on-error. Selection is secondary-container.
• Type: page is headline-large, section is title-large, and item is title-medium. Body is body-large (16px) and body-medium. Labels are label-large and label-medium. Numeric display is display-small.
• Radius: extra-small (4), medium (12), extra-large (28), full. Shadows: raised is level1, overlay is level3.
• Motion: durations are short1, short4, medium2 and long2. Easing is standard, emphasized-decelerate (enter) and emphasized-accelerate (exit).
• State opacities are the md.sys.state values (0.08 hover, 0.12 pressed, 0.12 focus). Disabled is 0.38 (M3 disabled content).
• Literals (no M3 sys token exists): the scrim is #000000 at 0.32 alpha (md.comp.scrim opacity), because an alias cannot add alpha. Also: target size 48px, icon sizes 18px and 24px, border widths 1px and 2px, focus ring 3px with a 2px offset, measure.max 65. Each literal has a $description naming its source.

Regenerating

scripts/generate.ts writes all five token files and gives the same output on every run. It works offline from the vendored material-web sources in scripts/sources/material-web/. Run node scripts/generate.ts --refresh to download them again from the pinned tag first. Do not edit the token files by hand.

• Colour: @material/material-color-utilities 0.4.0. The generator runs SchemeTonalSpot(Hct.fromInt(#6750A4), isDark, 0, "2021") (the DynamicScheme API). Each md.sys.color role becomes an alias to the exact palette tone the scheme resolves it to, and the generator fails if a role's tone does not match a palette tone exactly. Spec 2021 is the library default and the colour spec material-web v0_192 implements. Spec 2025 (M3 Expressive) produces fractional tones and chroma-adjusted colours that do not match any palette tone, so the three tiers could not be shown as aliases.
• Status colours (M3 only has error): TonalPalette.fromInt of seed colours success #2E7D32, warning #F9A825 and info #0288D1. They use the M3 custom-colour tone pattern: light 40/100/90/30 and dark 80/20/30/90 for color/on-color/container/on-container. They are not harmonized with the seed, so the hues stay conventional.
• Chart colours: TonalPalette.fromHueAndChroma(seedHue + [0, 240, 120, 300, 180, 60]°, 48). They use tone 40 in light mode and tone 80 in dark mode. Neighbouring series are at least 60° apart in hue. data.positive is success, data.negative is error and data.neutral is outline.
• Everything else: parsed from material-web tokens/versions/v0_192/_md-{ref,sys,comp}-*.scss. rem is converted to px at 16px/rem. Typography lineHeight is written as a multiplier (line-height ÷ size). Per-corner shape composites and the motion path token are skipped because DTCG has no type for them.

Contrast

Every contrast pair in the contract passes in both modes with the raw M3 roles, so no tones were adjusted. The pair closest to its limit is border.strong (outline, neutral-variant 50) on surface in light mode, at 4.26:1 against a 3:1 minimum. Every other pair clears its minimum by at least 1.5.

Provenance

manifest.json → provenance has the full list. In short:

Source	Version	License	Used for
@material/material-color-utilities	0.4.0	Apache-2.0	Palettes and light/dark colour roles; status and chart palettes
material-web tokens/versions/v0_192/*.scss	v2.5.0 (b4de401e)	Apache-2.0	Typeface, typescale, shape, motion, state, elevation levels, scrim/disabled opacity, icon sizes, outline widths
material-web tokens/_md-comp-focus-ring.scss, elevation/internal/_elevation.scss	v2.5.0	Apache-2.0	Focus ring width/offset/colour, shadow geometry

None of the values are scraped from m3.material.io.

Known quirk: material-color-utilities 0.4.0 contains extensionless relative imports (e.g. from '../dynamiccolor/dynamic_scheme'). Plain Node ESM cannot resolve them, so generate.ts registers a small resolve hook that retries them with .js added.

Logo

logo.svg is Material's own mark, unaltered, from m3.material.io/. Polyxd shows it beside the pack's name to identify the design system this pack is modelled on. Google's trademark guidelines restrict the use of its logos (Google Brand Features (incl. logos) may be used only after Google approves a permission request; no referential-use exception for logos is stated); Polyxd's maintainer has chosen to show it and is responsible for that choice.

Google, Material Design and its logo are trademarks of Google LLC, used here to identify the design system this pack is modelled on. Polyxd is not affiliated with Google LLC.