Package Exports

react-native-image-colors

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Readme

react-native-image-colors

Fetch prominent colors from an image.

Example 1 Demo 1 Android Demo 1 iOS Demo 2 Android Demo 2 iOS

This module is a wrapper around the Palette class on Android and UIImageColors on iOS.

Installation

$ npm install react-native-image-colors

$ yarn add react-native-image-colors

Android

Rebuild the app.

iOS

Install the pod, then rebuild the app.

npx pod-install

RN < 0.62: if you face a compilation error while building, your Xcode project likely does not support Swift which this package requires. You can fix this by either a) Creating a blank dummy swift file using Xcode or b) Following steps 1,2,3 here.

Usage

Start by importing the module

import ImageColors from "react-native-image-colors"

🎨 Fetch colors

const colors = await ImageColors.getColors(URI, config)

URI

Can be a URL or a local asset.

URL:

https://i.imgur.com/O3XSdU7.jpg

Local file:

const catImg = require("./images/cat.jpg")

config

Property	Description	Type	Required	Default
`fallback`	If a color property couldn't be retrieved, it will default to this hex color string (note: do not use shorthand hex. e.g. `#fff`).	`string`	No	`"#000000"`
`pixelSpacing` (Android only)	How many pixels to skip when iterating over image pixels. Higher means better performance (note: value cannot be lower than 1).	`number`	No	`5`
`quality` (iOS only)	Highest implies no downscaling and very good colors, but it is very slow. See UIImageColors	`'lowest'` `'low'` `'high'` `'highest'`	No	`"low"`

Result (android)

On android, you will get an object with the following color properties, plus a platform key to help you figure out that this is the android result type.

Property	Type
`dominant`	`string`
`average`	`string`
`vibrant`	`string`
`darkVibrant`	`string`
`lightVibrant`	`string`
`darkMuted`	`string`
`lightMuted`	`string`
`muted`	`string`
`platform`	`string`

Result (iOS)

On iOS, you get the following color properties object, plus the respective platform key.

Property	Type
`background`	`string`
`primary`	`string`
`secondary`	`string`
`detail`	`string`
`platform`	`string`

Example

const coolImage = require("./cool.jpg")

const colors = await ImageColors.getColors(coolImage, {
  fallback: "#228B22",
})

if (colors.platform === "android") {
  // Access android properties
  // e.g.
  const averageColor = colors.average
} else {
  // Access iOS properties
  // e.g.
  const backgroundColor = colors.background
}

Notes

There is an example react-native project.