W3C

The World Wide Web Consortium — the standards body Tim Berners-Lee founded in 1994 that publishes the web's specifications for CSS, the accessibility guidelines (WCAG) and WAI-ARIA, SVG, and much of the rest, through working groups whose documents advance to Recommendation

HTML and the DOM left for the WHATWG in the 2010s and the W3C now endorses that living standard rather than competing with it; HTTP and the network layer were never here but at the IETF; JavaScript is TC39's. Beside the working groups sit Community Groups, which anyone can join and whose reports are not standards — the Design Tokens Community Group is one, and its format is a Final Community Group Report, not a Recommendation.