--- title: Tokens description: Managing design decisions in your app using tokens. --- ## Overview Design tokens are the platform-agnostic way to manage design decisions in your application or website. It is a collection of attributes that describe any fundamental/atomic visual style. Each attribute is a key-value pair. > Design tokens in Chakra are largely influenced by the > [W3C Token Format](https://tr.designtokens.org/format/). A design token consists of the following properties: - `value`: The value of the token. This can be any valid CSS value. - `description`: An optional description of what the token can be used for. ## Defining Tokens Tokens are defined in the under the `theme` key in your system config. ```ts title="theme.ts" import { createSystem, defaultConfig, defineConfig } from "@chakra-ui/react" const config = defineConfig({ theme: { tokens: { colors: { primary: { value: "#0FEE0F" }, secondary: { value: "#EE0F0F" }, }, fonts: { body: { value: "system-ui, sans-serif" }, }, }, }, }) export const system = createSystem(defaultConfig, config) ``` :::warning > Token values need to be nested in an object with a `value` key. This is to > allow for additional properties like `description` and more in the future. ::: ## Using Tokens After defining tokens, we recommend using the Chakra CLI to generate theme typings for your tokens. ```bash npx @chakra-ui/cli typegen ./src/theme.ts ``` This will provide autocompletion for your tokens in your editor. ```tsx Hello World ``` ### Token reference syntax Chakra UI enables you to reference design tokens within composite values for CSS properties like `border`, `padding`, and `box-shadow`. This is achieved through the token reference syntax: `{path.to.token}`. :::note It is important to use the complete token path; for example, instead of using `red.300`, you must reference it as `colors.red.300`. ::: Here’s an example where token reference syntax is applied to both the border and p (padding) props: ```tsx ``` ## Token Nesting Tokens can be nested to create a hierarchy of tokens. This is useful when you want to group related tokens together. :::info Use the `DEFAULT` key to define the default value of a nested token. ::: ```ts title="theme.ts" import { createSystem, defaultConfig, defineConfig } from "@chakra-ui/react" const config = defineConfig({ theme: { tokens: { colors: { red: { DEFAULT: { value: "#EE0F0F" }, 100: { value: "#EE0F0F" }, }, }, }, }, }) export default createSystem(defaultConfig, config) ``` ```tsx Hello World ``` ## Token Types ### Colors Colors have meaning and support the purpose of the content, communicating things like hierarchy of information, and states. It is mostly defined as a string value or reference to other tokens. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ colors: { red: { 100: { value: "#fff1f0" }, }, }, }) export default createSystem({ theme: { tokens }, }) ``` ### Gradients Gradient tokens represent a smooth transition between two or more colors. Its value can be defined as a string or a composite value. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ gradients: { // string value simple: { value: "linear-gradient(to right, red, blue)" }, // composite value primary: { value: { type: "linear", placement: "to right", stops: ["red", "blue"] }, }, }, }) export default createSystem({ theme: { tokens }, }) ``` ### Sizes Size tokens represent the width and height of an element. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ sizes: { sm: { value: "12px" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Size tokens are typically used in `width`, `height`, `minWidth`, `maxWidth`, > `minHeight`, `maxHeight` properties. ### Spacing Spacing tokens represent the margin and padding of an element. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ spacing: { gutter: { value: "12px" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Spacing tokens are typically used in `margin`, `padding`, `gap`, and > `{top,right,bottom,left}` properties. ### Fonts Font tokens represent the font family of a text element. Its value is defined as a string or an array of strings. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ fonts: { body: { value: "Inter, sans-serif" }, heading: { value: ["Roboto Mono", "sans-serif"] }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Font tokens are typically used in `font-family` property. ### Font Sizes Font size tokens represent the size of a text element. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ fontSizes: { sm: { value: "12px" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Font size tokens are typically used in `font-size` property. ### Font Weights Font weight tokens represent the weight of a text element. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ fontWeights: { bold: { value: "700" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Font weight tokens are typically used in `font-weight` property. ### Letter Spacings Letter spacing tokens represent the spacing between letters in a text element. Its value is defined as a string. ```tsx const tokens = defineTokens({ letterSpacings: { wide: { value: "0.1em" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Letter spacing tokens are typically used in `letter-spacing` property. ### Line Heights Line height tokens represent the height of a line of text. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ lineHeights: { normal: { value: "1.5" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Line height tokens are typically used in `line-height` property. ### Radii Radii tokens represent the radius of a border. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ radii: { sm: { value: "4px" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Radii tokens are typically used in `border-radius` property. ### Borders A border is a line surrounding a UI element. You can define them as string values or as a composite value ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ borders: { // string value subtle: { value: "1px solid red" }, // string value with reference to color token danger: { value: "1px solid {colors.red.400}" }, // composite value accent: { value: { width: "1px", color: "red", style: "solid" } }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Border tokens are typically used in `border`, `border-top`, `border-right`, > `border-bottom`, `border-left`, `outline` properties. ### Border Widths Border width tokens represent the width of a border. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ borderWidths: { thin: { value: "1px" }, thick: { value: "2px" }, medium: { value: "1.5px" }, }, }) export default createSystem({ theme: { tokens }, }) ``` ### Shadows Shadow tokens represent the shadow of an element. Its value is defined as single or multiple values containing a string or a composite value. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ shadows: { // string value subtle: { value: "0 1px 2px 0 rgba(0, 0, 0, 0.05)" }, // composite value accent: { value: { offsetX: 0, offsetY: 4, blur: 4, spread: 0, color: "rgba(0, 0, 0, 0.1)", }, }, // multiple string values realistic: { value: [ "0 1px 2px 0 rgba(0, 0, 0, 0.05)", "0 1px 4px 0 rgba(0, 0, 0, 0.1)", ], }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Shadow tokens are typically used in `box-shadow` property. ### Easings Easing tokens represent the easing function of an animation or transition. Its value is defined as a string or an array of values representing the cubic bezier. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ easings: { // string value easeIn: { value: "cubic-bezier(0.4, 0, 0.2, 1)" }, // array value easeOut: { value: [0.4, 0, 0.2, 1] }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Ease tokens are typically used in `transition-timing-function` property. ### Opacity Opacity tokens help you set the opacity of an element. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ opacity: { 50: { value: 0.5 }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Opacity tokens are typically used in `opacity` property. ### Z-Index This token type represents the depth of an element's position on the z-axis. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ zIndex: { modal: { value: 1000 }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Z-index tokens are typically used in `z-index` property. ### Assets Asset tokens represent a url or svg string. Its value is defined as a string or a composite value. ```ts type CompositeAsset = { type: "url" | "svg"; value: string } type Asset = string | CompositeAsset ``` ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ tokens: { assets: { logo: { value: { type: "url", value: "/static/logo.png" }, }, checkmark: { value: { type: "svg", value: "..." }, }, }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Asset tokens are typically used in `background-image` property. ### Durations Duration tokens represent the length of time in milliseconds an animation or animation cycle takes to complete. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ durations: { fast: { value: "100ms" }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Duration tokens are typically used in `transition-duration` and > `animation-duration` properties. ### Animations Animation tokens represent a keyframe animation. Its value is defined as a string value. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ animations: { spin: { value: "spin 1s linear infinite", }, }, }) export default createSystem({ theme: { tokens }, }) ``` > Animation tokens are typically used in `animation` property. ### Aspect Ratios Aspect ratio tokens represent the aspect ratio of an element. Its value is defined as a string. ```tsx title="theme.ts" import { defineTokens } from "@chakra-ui/react" const tokens = defineTokens({ aspectRatios: { "1:1": { value: "1 / 1" }, "16:9": { value: "16 / 9" }, }, }) export default createSystem({ theme: { tokens }, }) ```