What a design token is

A design token is a design decision recorded as data: a name, a value, and — in a mature system — a type and a description explaining when to use it. The decision "our primary interactive color is this specific blue" becomes an entry in a JSON file rather than a hex code repeated across stylesheets. Everything downstream — CSS, component libraries, documentation sites, native platforms — consumes the entry by name, so the decision is made once and referenced everywhere.

The PointSav Design System publishes its tokens as a single machine-readable bundle, tokens.full.json. The bundle has grown past its original two-group shape: it now carries four top-level pillars — primitive (130 leaves), theme (86 leaves, split 53 light-theme semantic roles, 28 dark-mode entries, and 5 accessibility-specific overrides), and two pillars this article's original scope didn't cover, paper (383 leaves, print/document tokens) and writing (37 leaves, editorial-content tokens). The counts below describe the primitive and theme pillars this article is actually about; like any live bundle, the exact leaf count moves as the design system grows, and the file itself — not a fixed number in this article — is the authoritative source.

A decision with a name

The simplest way to see what a token buys is to compare the two ways of writing the same button. Without tokens, a stylesheet says background: #234ed8 — a value with no history and no meaning. If the brand color changes, every occurrence must be found and edited, and nothing distinguishes the occurrences that meant "primary action" from ones that happened to use the same blue for an unrelated reason.

With tokens, the stylesheet references a name, and the name carries the intent. In the published PointSav bundle, #234ed8 exists in exactly one place: the primitive token primitive.color.primary-60. A semantic token, theme.semantic.interactive-primary, points at it by alias — {color.primary-60} — and buttons consume the semantic name. Change the primitive once and every surface that means "primary interactive" follows; surfaces that meant something else are untouched because they reference a different name.

Tokens also carry documentation in place. The bundle's duration token speed-2 is not just 120ms; its description field reads "Quick — button press, focus ring fade." The spacing token space-3 records "8px @ 16px base — paragraph rhythm floor." The usage rule travels with the data, where a build tool, a linter, or an AI agent reading the file at generation time can see it — not in a style guide that drifts separately.

One format across tools: the DTCG Format Module

For most of the last decade every token tool used its own file shape. That ended when the Design Tokens Community Group, a W3C community group, published the first stable version of its Format Module — version 2025.10 — announced on October 28, 2025. The specification defines a vendor-neutral JSON format: tokens declare $value, $type, and $description; groups nest; aliases use curly-brace references such as {color.primary-60}; and the stable version added support for modern color spaces and for theming and multi-brand inheritance. Design tools and token pipelines on both the design and engineering side support the format, which is what makes a token file a portable interchange artifact rather than a private convention.

The PointSav bundle is written to this specification and declares it explicitly: both top-level groups carry "$schema": "https://schemas.designtokens.org/2025-10-01/draft.json". The bundle uses the specification's core mechanisms — typed groups, description fields, and curly-brace aliasing — and does not yet use the newer $extends group-inheritance feature; that is an evaluation still to be done, noted in this article's open questions rather than glossed over.

Three tiers: primitive, semantic, component

The architecture the field has converged on — and the one this design system teaches on its foundations page — arranges tokens in three tiers, each answering a different question.

Primitive tokens answer "what values exist?" They are the raw palette: options, not decisions about use. The documentation site's teaching example is ps-blue-600: #234ed8 — a blue with a scale position and no opinion about where it appears. In the published bundle this tier is the primitive group: 60 colors in role-named families (primary, neutral, positive, caution, critical, each on a numeric 10–100 scale, plus black and white), a 13-step spacing scale, 14 typography styles, 6 durations, 4 easing curves, 5 border dimensions, 3 viewport breakpoints, a focus-ring composite, and a set of surface, elevation, and site-chrome subgroups (surface, elevation, brand-accent, category-tile, footer) added since this article's original scope — 130 tokens in all.

Semantic tokens answer "what does this value mean here?" They alias a primitive and attach a role. The teaching example is cds-interactive: {ps-blue-600} — "anything a person can act on." The bundle's counterpart is theme.semantic.interactive-primary: {color.primary-60}, one of 53 semantic roles covering surfaces (surface-base, surface-elevated), text ("ink" in this system's vocabulary: ink-primary, ink-secondary), borders, focus, interactive states with their hover and pressed variants, and status support colors. The semantic tier is where a theme lives: a tenant re-points the aliases at its own primitives without touching any component. The companion article on theming covers this mechanism in detail.

Component tokens answer "what does this specific part use?" The teaching example is btn-primary-bg: {cds-interactive} — this button, this surface, nothing else. Scoping one more name to one component costs a line and buys precision: if primary buttons alone ever need to diverge, one alias is re-pointed and nothing else moves. One honest caveat, stated plainly: the exported bundle currently ships the primitive and semantic tiers; the component tier exists as the documented naming convention consumed by component recipes, not as a third group inside tokens.full.json. The chain ps-blue-600 → cds-interactive → btn-primary-bg is how the site teaches the architecture; the first two links are load-bearing in the published data today, and formalizing the third in the export is an open decision.

The direction of reference is the discipline that keeps the graph coherent: components point at semantics, semantics point at primitives, and nothing points the other way. A component never reaches past the semantic tier to grab primary-60 directly, because doing so re-embeds the raw value the token system exists to centralize.

Why this structure earns its place

The three-tier structure is not PointSav's invention, and this design system does not claim otherwise — numeric primitive scales, semantic aliasing, and component scoping are the shared vocabulary of the modern design-system field, formalized by the DTCG specification's aliasing model. What the structure buys any adopter is the same: decisions made once; intent readable in the name; themes expressed as substitution rather than duplication; and a file that tools and agents can consume without a human interpreting a style guide. The design system's separate primitive-vocabulary article documents which structural patterns were kept from the field and which names and values are PointSav-original, so practitioners arriving from other systems know what will feel familiar and why.

Licensing: the data and this article are licensed differently

Two artifacts are in play here, under two different licenses, and precision about which is which matters. The token data itself — the DTCG JSON bundle in the pointsav-design-system repository — is published under Apache-2.0, following the convention of open-source design systems. This article's text, like the rest of the documentation wiki it belongs to, is licensed CC BY 4.0. Neither license extends to the other artifact: reusing the token file is an Apache-2.0 question; reusing or adapting this explanation is a CC BY 4.0 question.

Scope and limits

Stated plainly: the token counts and values cited here describe the published PointSav bundle as of this writing and were recomputed from the file during drafting; they will drift as the bundle evolves, and the file — not this article — is authoritative. The component tier is a documented convention rather than a shipped group in the export. And the bundle exercises the DTCG 2025.10 core rather than the specification's full feature set. Each of these is a status, not a defect, and this design system prefers to publish statuses visibly.

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This article is entry-level background for readers new to design tokens, ahead of the design system's reference material. For why the primitive vocabulary looks the way it does, see the primitive-vocabulary rationale article; for how themes work, see "Theming via semantic tokens."