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https://github.com/kleinfreund/vue-accessible-color-picker

A color picker component for Vue.js 3.
https://github.com/kleinfreund/vue-accessible-color-picker

color-picker component vue

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A color picker component for Vue.js 3.

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README 

        
# vue-accessible-color-picker



[![Tests passing](https://github.com/kleinfreund/vue-accessible-color-picker/workflows/Tests/badge.svg)](https://github.com/kleinfreund/vue-accessible-color-picker/actions)



A color picker component for Vue.js.



This package’s files are distributed in the ES module format and have not been transpiled.



Links:



- [demo](https://vue-accessible-color-picker.netlify.app)

- [**npmjs.com**/package/vue-accessible-color-picker](https://www.npmjs.com/package/vue-accessible-color-picker)

- [**github.com**/kleinfreund/vue-accessible-color-picker](https://github.com/kleinfreund/vue-accessible-color-picker)

	- [code of conduct](https://github.com/kleinfreund/vue-accessible-color-picker/blob/main/CODE_OF_CONDUCT.md)

	- [contributing guidelines](https://github.com/kleinfreund/vue-accessible-color-picker/blob/main/CONTRIBUTING.md)

- as a web component: [yet-another-color-picker](https://www.npmjs.com/package/yet-another-color-picker)



## Contents



- [Installation](#installation)

- [Usage](#usage)

- [Documentation](#documentation)

	- [Props](#props)

		- [`alphaChannel`](#alphachannel)

		- [`color`](#color)

		- [`defaultFormat`](#defaultformat)

		- [`id`](#id)

		- [`visibleFormats`](#visibleformats)

	- [Events](#events)

		- [`color-change`](#color-change)

	- [Slots](#slots)

		- [alpha-range-input-label](#alpha-range-input-label)

		- [copy-button](#copy-button)

		- [format-switch-button](#format-switch-button)

		- [hue-range-input-label](#hue-range-input-label)

	- [Theming](#theming)

- [Versioning](#versioning)

- [Design](#design)



## Installation



```sh

npm install vue-accessible-color-picker

```



## Usage



In a Vue single file component, import the `ColorPicker` component and its styles (if you want to use them).



```vue



	



import { ColorPicker } from 'vue-accessible-color-picker'



@import url('vue-accessible-color-picker/styles');



```



When using [Vue’s composition API](https://vuejs.org/guide/extras/composition-api-faq.html), you can directly use the component in the file’s `template` section once you import it.



You can also register the component and import the styles globally.



## Documentation



### Props



#### `alphaChannel`



- **Description**: Whether to show input controls for a color’s alpha channel. If set to `'hide'`, the alpha range input and the alpha channel input are hidden, the “Copy color” button will copy a CSS color value without alpha channel, and the object emitted in a `color-change` event will have a `cssColor` property value without alpha channel.

- **Type**: `'show'` or `'hide'`

- **Required**: No

- **Default**: `'show'`

- **Usage**:



	```vue

	

	```



#### `color`



- **Description**: Sets the color of the color picker. You can pass any valid CSS color string or an object matching the internal color representation for an HSL, HSV, HWB, or RGB color.

- **Type**: `string`, `ColorHsl`, `ColorHwb`, or `ColorRgb`

- **Required**: No

- **Default**: `'#ffffffff'`

- **Usage**:



	```vue

	

	```



	```vue

	

	```



	```vue

	

	```



	```vue

	

		

	



	

	import { ref } from 'vue'

	import { ColorPicker } from 'vue-accessible-color-picker'



	const color = ref('hsl(270 100% 50% / 0.8)')



	function updateColor (eventData) {

		color.value = eventData.cssColor

	}

	

	```



#### `defaultFormat`



- **Description**: The color format to show by default when rendering the color picker. Must be one of the formats specified in `visibleFormats`.

- **Type**: `VisibleColorFormat`

- **Required**: No

- **Default**: `'hsl'`

- **Usage**:



	```vue

	

	```



#### `id`



- **Description**: The ID value will be used to prefix all `input` elements’ `id` and `label` elements’ `for` attribute values. Set this prop if you use multiple instances of the `color-picker` component on one page.

- **Type**: `string`

- **Required**: No

- **Default**: `'color-picker'`

- **Usage**:



	```vue

	

	```



#### `visibleFormats`



- **Description**: A list of visible color formats. Controls for which formats the color `input` elements are shown and in which order the formats will be cycled through when activating the format switch button.

- **Type**: `VisibleColorFormat[]`

- **Required**: No

- **Default**: `['hex', 'hsl', 'hwb', 'rgb']`

- **Usage**:



	```vue

	

	```



### Events



#### `color-change`



- **Description**: The event that is emitted each time the internal colors object is updated.

- **Data**: The event emits an object containing both the internal colors object and a CSS color value as a string based on the currently active format. The `cssColor` property will respect `alphaChannel`.



	```ts

	{

		colors: {

			hex: string

			hsl: { h: number, s: number, l: number, a: number }

			hsv: { h: number, s: number, v: number, a: number }

			hwb: { h: number, w: number, b: number, a: number }

			rgb: { r: number, g: number, b: number, a: number }

		}

		cssColor: string

	}

	```



- **Usage**:



	```vue

	

		

	



	

	import { ColorPicker } from 'vue-accessible-color-picker'



	function colorChanged (eventData) {

		console.log(eventData)

	}

	

	```



#### `color-copy`



- **Description**: The `color-copy` event is fired once a copy operation succeeded.

- **Data**: Emits the same event data as [the `color-change` event](#color-change).

- **Usage**:



	```vue

	

		

	



	

	import { ColorPicker } from 'vue-accessible-color-picker'



	function colorCopied (eventData) {

		console.log(eventData)

	}

	

	```



### Slots



#### alpha-range-input-label



- **Description**: Overrides the content of the alpha range input’s `label` element.

- **Default content**: Alpha



#### copy-button



- **Description**: Overrides the content of the copy button element.

- **Default content**: Copy color (and SVG icon)



#### format-switch-button



- **Description**: Overrides the content of the format switch button element.

- **Default content**: Switch format (and SVG icon)



#### hue-range-input-label



- **Description**: Overrides the content of the hue range input’s `label` element.

- **Default content**: Hue



### Theming



You can customize the GUI of the color picker using CSS custom properties:



```css

:root {

	--vacp-color-focus: tomato;

	--vacp-width-border: 2px;

}

```



Available custom properties and their default values:



| Custom property                 | Default value |

| ------------------------------- | ------------- |

| `--vacp-color-background-input` | `#fff`

| `--vacp-color-background`       | `#fff`

| `--vacp-color-border`           | `#000`

| `--vacp-color-focus`            | `#19f`

| `--vacp-color-text-input`       | `currentColor`

| `--vacp-color-text`             | `currentColor`

| `--vacp-font-family`            | `-apple-system, BlinkMacSystemFont, Segoe UI, Arial, sans-serif`

| `--vacp-font-size`              | `0.8em`

| `--vacp-spacing`                | `6px`

| `--vacp-width-border`           | `1px`

| `--vacp-width-color-space`      | `300px`



## Versioning



This package uses [semantic versioning](https://semver.org).



## Design



The color picker consists of the following main elements:



- **Color space**:



	For fine-tuning the saturation and lightness/value, a slice of the HSV cylinder for the currently selected hue is shown.



	The HSV cylinder is more convenient for this task than the HSL cylinder as it shows a color at 100% saturation and 100% value in the top right corner (i.e. one can drag the color space thumb into the corner as a quasi shortcut). The HSL cylinder’s slice has this color at the halfway point of the Y axis (i.e. at 50% lightness) which isn’t easy to select.



- **Hue slider**:



	A slider for selecting the current hue. This rotates the HSV cylinder; thus, it changes the slice of the HSV cylinder that’s shown in the color space.



- **Alpha slider**:



	A slider for selecting the current alpha value.



- **Copy button**:



	Copies the color formatted as a CSS color string in the active format.



- **Color inputs**:



	A set of text fields which allow you to enter the individual components of each color. The text fields are shown based on the active format.



- **Switch format button**:



	Cycles through the available color formats (currently HEX, HSL, HWB, and RGB).