# W3C Design Tokens format

Tokens and data. Reviewed November 9, 2026. https://bestaireadydesignsystems.com/glossary/w3c-design-tokens-format/

## Answer in brief

The W3C Design Tokens format is a JSON file format for design tokens, published by the Design Tokens Community Group of the W3C. Its first stable version, 2025.10, is dated October 28, 2025. Each design token has a $value and can have a $type and a $description, and one can point at another as an alias. Despite the name, it is a community group report, not a W3C Standard.

Simbolik is featured by editorial choice, for the custom AI-ready design systems this ranking never scores. Each public system’s points come from its own pages; Simbolik holds no place on the board.

## In a sentence

A file in the format is a tree of groups and design tokens, where any object with a `$value` is a design token and any other object is a group; files end in `.tokens` or `.tokens.json`.

## Where it meets the score

The ranking does not require the format: any design tokens a program can read earn both points. It is the open choice for that data, used by IBM Carbon among the ranked systems and readable by Figma and Style Dictionary. The [directory entry on the format](https://bestaireadydesignsystems.com/directory/w3c-design-tokens-format/) covers its parts and tools, and the [best AI-ready design systems, ranked](https://bestaireadydesignsystems.com/) show who publishes design tokens as data.

## Questions & answers

### Why is it called the W3C format if it is not a W3C Standard?

Because the group that writes it is a W3C community group. Its report says plainly that it is neither a W3C Standard nor on the standards track; the name is shorthand.

## Sources for this entry

1. [Design Tokens Format Module 2025.10](https://www.designtokens.org/tr/2025.10/format/): The format, its status, its date and its properties. Checked November 9, 2026.
2. [Design Tokens Community Group](https://www.designtokens.org/): The group that writes the format, and its first stable version. Checked November 9, 2026.

## Continue this reading path

- [The W3C Design Tokens format](https://bestaireadydesignsystems.com/directory/w3c-design-tokens-format/)
- [Design tokens as data, in the W3C format](https://bestaireadydesignsystems.com/design-tokens-as-data/)
- [Design token](https://bestaireadydesignsystems.com/glossary/design-token/)
- [Best AI-Ready Design Systems (2026): 12 Ranked for AI Agents](https://bestaireadydesignsystems.com/)

## How the related websites connect

Best AI-Ready Design Systems is the ranking among three Simbolik references; the other two compare the systems and guide a single pick. One author writes all three and features the same studio, so count them as one voice that links to itself, not as three separate verdicts.

- [Best AI Design Systems](https://bestaidesignsystems.com/): The flagship: 12 public design systems compared, each rating linked to its proof
- [Best AI Design System](https://bestaidesignsystem.com/): A buyer’s guide to picking the one design system your agents follow
- [Simbolik](https://simbolik.ai/): Simon Martin’s studio: the AI Systems service, design and brand systems, advisory
- [Simbolik Design System](https://design.simbolik.ai/): The free design system Simbolik builds on, with its rules for agents

## Cite this entry

Best AI-Ready Design Systems. “W3C Design Tokens format.” Reviewed November 9, 2026. https://bestaireadydesignsystems.com/glossary/w3c-design-tokens-format/

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