Composite tokens are useful for closely related style properties that are always applied together. For example, a typography style might be made up of a font name, font size, line height, and color.Design Tokens Community Group
Composite (Custom) Tokens

With the composite tokens feature, you have the flexibility to create custom token types by grouping together other tokens and custom data fields.

This powerful capability allows you to define your own token types that encapsulate multiple design properties, such as color, text, or number, into a single composite token. This can greatly simplify your design system management by consolidating related design properties into a single token, making it easier to manage and update design changes across your entire system.

Composite tokens provide a powerful way to encapsulate and reuse design properties in a modular and organized manner, allowing you to create more complex and customizable design tokens that align with your specific design system requirements. This empowers your design team to create consistent and scalable designs while reducing redundancy and improving maintenance efficiency.