beta

ColorSwatch

A ColorSwatch displays a preview of a selected color.

install	`yarn add react-aria-components`
version	1.2.0
usage	`import {ColorSwatch} from 'react-aria-components'`

View ARIA pattern

Example#

import {ColorSwatch} from 'react-aria-components';

<ColorSwatch color="#f00" />

import {ColorSwatch} from 'react-aria-components';

<ColorSwatch color="#f00" />

import {ColorSwatch} from 'react-aria-components';

<ColorSwatch color="#f00" />

Show CSS

.react-aria-ColorSwatch {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.react-aria-ColorSwatch {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.react-aria-ColorSwatch {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

Features#

A color swatch may seem simple to build with a <div>, but requires additional semantics and labeling for accessibility.

Accessible – Includes a localized color description for screen reader users (e.g. "dark vibrant blue"). Uses the img role with a custom aria-roledescription of "color swatch".
International – Accessible color description and role description are translated into over 30 languages.

Anatomy#

A color swatch consists of a color preview, which is exposed to assistive technology with a localized color description.

import {ColorSwatch} from 'react-aria-components';

<ColorSwatch />

import {ColorSwatch} from 'react-aria-components';

<ColorSwatch />

import {ColorSwatch} from 'react-aria-components';

<ColorSwatch />

Reusable wrappers#

If you will use a ColorSwatch in multiple places in your app, you can wrap all of the pieces into a reusable component. This way, the DOM structure, styling code, and other logic are defined in a single place and reused everywhere to ensure consistency.

This example wraps ColorSwatch and shows how to use the color render prop to add a checkerboard pattern behind partially transparent colors.

import type {ColorSwatchProps} from 'react-aria-components';

export function MyColorSwatch(props: ColorSwatchProps) {
  return (
    <ColorSwatch 
      {...props}
      style={({color}) => ({
        background: `linear-gradient(${color}, ${color}),
          repeating-conic-gradient(#CCC 0% 25%, white 0% 50%) 50% / 16px 16px`
      })} />
  );
}

<MyColorSwatch color="#f00a" />

import type {ColorSwatchProps} from 'react-aria-components';

export function MyColorSwatch(props: ColorSwatchProps) {
  return (
    <ColorSwatch
      {...props}
      style={({ color }) => ({
        background: `linear-gradient(${color}, ${color}),
          repeating-conic-gradient(#CCC 0% 25%, white 0% 50%) 50% / 16px 16px`
      })}
    />
  );
}

<MyColorSwatch color="#f00a" />

import type {ColorSwatchProps} from 'react-aria-components';

export function MyColorSwatch(
  props: ColorSwatchProps
) {
  return (
    <ColorSwatch
      {...props}
      style={(
        { color }
      ) => ({
        background:
          `linear-gradient(${color}, ${color}),
          repeating-conic-gradient(#CCC 0% 25%, white 0% 50%) 50% / 16px 16px`
      })}
    />
  );
}

<MyColorSwatch color="#f00a" />

Value#

ColorSwatch accepts a value via the color prop. The value should be a color string or Color object.

In the example below, the parseColor function is used to parse the initial color from an HSL string. This is passed to the value prop of a ColorSlider, and the color prop of a ColorSwatch to show a preview of the selected color.

import {ColorSlider, ColorThumb, parseColor, SliderTrack} from 'react-aria-components';

function Example() {
  let [color, setColor] = React.useState(parseColor('hsl(0, 100%, 50%)'));
  return (
    <div style={{ display: 'flex', flexDirection: 'column', gap: 8 }}>
      <ColorSlider value={color} onChange={setColor} channel="hue">
        <SliderTrack>
          <ColorThumb />
        </SliderTrack>
      </ColorSlider>
      <MyColorSwatch color={color} />
    </div>
  );
}

import {
  ColorSlider,
  ColorThumb,
  parseColor,
  SliderTrack
} from 'react-aria-components';

function Example() {
  let [color, setColor] = React.useState(
    parseColor('hsl(0, 100%, 50%)')
  );
  return (
    <div
      style={{
        display: 'flex',
        flexDirection: 'column',
        gap: 8
      }}
    >
      <ColorSlider
        value={color}
        onChange={setColor}
        channel="hue"
      >
        <SliderTrack>
          <ColorThumb />
        </SliderTrack>
      </ColorSlider>
      <MyColorSwatch color={color} />
    </div>
  );
}

import {
  ColorSlider,
  ColorThumb,
  parseColor,
  SliderTrack
} from 'react-aria-components';

function Example() {
  let [color, setColor] =
    React.useState(
      parseColor(
        'hsl(0, 100%, 50%)'
      )
    );
  return (
    <div
      style={{
        display: 'flex',
        flexDirection:
          'column',
        gap: 8
      }}
    >
      <ColorSlider
        value={color}
        onChange={setColor}
        channel="hue"
      >
        <SliderTrack>
          <ColorThumb />
        </SliderTrack>
      </ColorSlider>
      <MyColorSwatch
        color={color}
      />
    </div>
  );
}

Labeling#

By default, ColorSwatch includes a localized color description for screen reader users (e.g. "dark vibrant blue") as an aria-label. If you have a more specific color name (e.g. Pantone colors), the automatically generated color description can be overridden via the colorName prop. An additional label describing the context of the color swatch (e.g. "Background color") can also be provided via the aria-label or aria-labelledby props.

In the example below, the full accessible name of the color swatch will be "Fire truck red, Background color".

<MyColorSwatch
  color="#f00"
  aria-label="Background color"
  colorName="Fire truck red"
/>

<MyColorSwatch
  color="#f00"
  aria-label="Background color"
  colorName="Fire truck red"
/>

<MyColorSwatch
  color="#f00"
  aria-label="Background color"
  colorName="Fire truck red"
/>

Props#

Name	Type	Description
`color`	`string \| Color \| null`	The color value to display in the swatch.
`colorName`	`string`	A localized accessible name for the color. By default, a description is generated from the color value, but this can be overridden if you have a more specific color name (e.g. Pantone colors).
`className`	`string \| ( (values: ColorSwatchRenderProps & & {defaultClassName: string \| \| undefined } )) => string`	The CSS className for the element. A function may be provided to compute the class based on component state.
`style`	`CSSProperties \| ( (values: ColorSwatchRenderProps & & {defaultStyle: CSSProperties } )) => CSSProperties`	The inline style for the element. A function may be provided to compute the style based on component state.

Layout

Name	Type	Description
`slot`	`string \| null`	A slot name for the component. Slots allow the component to receive props from a parent component. An explicit `null` value indicates that the local props completely override all props received from a parent.

Accessibility

Name	Type	Description
`id`	`string`	The element's unique identifier. See MDN.
`aria-label`	`string`	Defines a string value that labels the current element.
`aria-labelledby`	`string`	Identifies the element (or elements) that labels the current element.
`aria-describedby`	`string`	Identifies the element (or elements) that describes the object.
`aria-details`	`string`	Identifies the element (or elements) that provide a detailed, extended description for the object.

Styling#

React Aria components can be styled in many ways, including using CSS classes, inline styles, utility classes (e.g. Tailwind), CSS-in-JS (e.g. Styled Components), etc. By default, all components include a builtin className attribute which can be targeted using CSS selectors. These follow the react-aria-ComponentName naming convention.

.react-aria-ColorSwatch {
  /* ... */
}

.react-aria-ColorSwatch {
  /* ... */
}

.react-aria-ColorSwatch {
  /* ... */
}

A custom className can also be specified on any component. This overrides the default className provided by React Aria with your own.

<ColorSwatch className="my-color-swatch">
  {/* ... */}
</ColorSwatch>

<ColorSwatch className="my-color-swatch">
  {/* ... */}
</ColorSwatch>

<ColorSwatch className="my-color-swatch">
  {/* ... */}
</ColorSwatch>

The className and style props also accept functions which receive states for styling. This lets you dynamically determine the classes or styles to apply, which is useful when using utility CSS libraries like Tailwind.

<ColorSwatch style={({ color }) => ({ background: color.toString('css') })} />

<ColorSwatch
  style={({ color }) => ({
    background: color.toString('css')
  })}
/>

<ColorSwatch
  style={(
    { color }
  ) => ({
    background: color
      .toString('css')
  })}
/>

The render props for ColorSwatch are documented below.

Name	Description
`color`	The color of the swatch.

Advanced customization#

Contexts#

All React Aria Components export a corresponding context that can be used to send props to them from a parent element. This enables you to build your own compositional APIs similar to those found in React Aria Components itself. You can send any prop or ref via context that you could pass to the corresponding component. The local props and ref on the component are merged with the ones passed via context, with the local props taking precedence (following the rules documented in mergeProps).

Component	Context	Props	Ref
`ColorSwatch`	`ColorSwatchContext`	`ColorSwatchProps`	`HTMLDivElement`

import {ColorSwatchContext} from 'react-aria-components';

<ColorSwatchContext.Provider value={{color: '#ff0'}}>
  <ColorSwatch />
</ColorSwatchContext.Provider>

import {ColorSwatchContext} from 'react-aria-components';

<ColorSwatchContext.Provider value={{color: '#ff0'}}>
  <ColorSwatch />
</ColorSwatchContext.Provider>

import {ColorSwatchContext} from 'react-aria-components';

<ColorSwatchContext.Provider
  value={{
    color: '#ff0'
  }}
>
  <ColorSwatch />
</ColorSwatchContext.Provider>

Hooks#

If you need to customize things even further, such as accessing internal state or customizing DOM structure, you can drop down to the lower level Hook-based API. See useColorSwatch for more details.

Represents a color value.

Method	Description
`toFormat( (format: ColorFormat )): Color`	Converts the color to the given color format, and returns a new Color object.
`toString( (format?: ColorFormat \| \| 'css' )): string`	Converts the color to a string in the given format.
`clone(): Color`	Returns a duplicate of the color value.
`toHexInt(): number`	Converts the color to hex, and returns an integer representation.
`getChannelValue( (channel: ColorChannel )): number`	Returns the numeric value for a given channel. Throws an error if the channel is unsupported in the current color format.
`withChannelValue( (channel: ColorChannel, , value: number )): Color`	Sets the numeric value for a given channel, and returns a new Color object. Throws an error if the channel is unsupported in the current color format.
`getChannelRange( (channel: ColorChannel )): ColorChannelRange`	Returns the minimum, maximum, and step values for a given channel.
`getChannelName( (channel: ColorChannel, , locale: string )): string`	Returns a localized color channel name for a given channel and locale, for use in visual or accessibility labels.
`getChannelFormatOptions( (channel: ColorChannel )): Intl.NumberFormatOptions`	Returns the number formatting options for the given channel.
`formatChannelValue( (channel: ColorChannel, , locale: string )): string`	Formats the numeric value for a given channel for display according to the provided locale.
`getColorSpace(): ColorSpace`	Returns the color space, 'rgb', 'hsb' or 'hsl', for the current color.
`getColorSpaceAxes( (xyChannels: {xChannel?: ColorChannel, yChannel?: ColorChannel } )): ColorAxes`	Returns the color space axes, xChannel, yChannel, zChannel.
`getColorChannels(): [ ColorChannel, ColorChannel, ColorChannel ]`	Returns an array of the color channels within the current color space space.
`getColorName( (locale: string )): string`	Returns a localized name for the color, for use in visual or accessibility labels.
`getHueName( (locale: string )): string`	Returns a localized name for the hue, for use in visual or accessibility labels.

A list of supported color formats.

'hex'
  | 'hexa'
  | 'rgb'
  | 'rgba'
  | 'hsl'
  | 'hsla'
  | 'hsb'
  | 'hsba'

A list of color channels.

'hue'
  | 'saturation'
  | 'brightness'
  | 'lightness'
  | 'red'
  | 'green'
  | 'blue'
  | 'alpha'

Name	Type	Description
`minValue`	`number`	The minimum value of the color channel.
`maxValue`	`number`	The maximum value of the color channel.
`step`	`number`	The step value of the color channel, used when incrementing and decrementing.
`pageSize`	`number`	The page step value of the color channel, used when incrementing and decrementing.

'rgb'
  | 'hsl'
  | 'hsb'

{xChannel: ColorChannel,
yChannel: ColorChannel,
zChannel: ColorChannel
}

Parses a color from a string value. Throws an error if the string could not be parsed.

parseColor(
  (value: string
)): Color

Name	Type	Description
`color`	`Color`	The color of the swatch.

Name	Type	Description
`color`	`string \| Color \| null`	The color value to display in the swatch.
`colorName`	`string`	A localized accessible name for the color. By default, a description is generated from the color value, but this can be overridden if you have a more specific color name (e.g. Pantone colors).
`aria-label`	`string`	Defines a string value that labels the current element.
`aria-labelledby`	`string`	Identifies the element (or elements) that labels the current element.
`aria-describedby`	`string`	Identifies the element (or elements) that describes the object.
`aria-details`	`string`	Identifies the element (or elements) that provide a detailed, extended description for the object.
`id`	`string`	The element's unique identifier. See MDN.
`className`	`string \| ( (values: ColorSwatchRenderProps & & {defaultClassName: string \| \| undefined } )) => string`	The CSS className for the element. A function may be provided to compute the class based on component state.
`style`	`CSSProperties \| ( (values: ColorSwatchRenderProps & & {defaultStyle: CSSProperties } )) => CSSProperties`	The inline style for the element. A function may be provided to compute the style based on component state.
`slot`	`string \| null`	A slot name for the component. Slots allow the component to receive props from a parent component. An explicit `null` value indicates that the local props completely override all props received from a parent.