RandomKolor

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A tiny (Kotlin) library for generating attractive colors

Inspired by David Merfield’s randomColor.js. You can use the library to generate attractive random colors on Android apps.

This project comes with a sample app which demonstrates some of the functionality:

Installation

The library is hosted on JitPack

1. Add it in your root build.gradle at the end of repositories:

allprojects {
  repositories {
    ...
    maven { url 'https://jitpack.io' }
  }
}

2. Add the dependency

dependencies {
    implementation 'com.github.brian-norman:RandomKolor:1.0'
}

Options

• hue – Controls the hue of the generated color. You can pass in a color: Color.RED, Color.ORANGE, Color.YELLOW, Color.Green, Color.BLUE, Color.Purple, Color.PINK and Color.MONOCHROME are currently supported.
• luminosity – Controls the luminosity of the generated color. Library supports: Luminosity.RANDOM, Luminosity.BRIGHT, Luminosity.LIGHT, Luminosity.DARK
• count – An integer which specifies the number of colors to generate.

API

fun randomColor(hue: Hue = RandomHue, luminosity: Luminosity = Luminosity.RANDOM, format: Format = Format.RGB): String

<div class="highlight highlight-source-kotlin position-relative" data-snippet-clipboard-copy-content="fun randomColors(count: Int, hue: Hue = RandomHue, luminosity: Luminosity = Luminosity.RANDOM, format: Format = Format.RGB): List
“>

fun randomColors(count: Int, hue: Hue = RandomHue, luminosity: Luminosity = Luminosity.RANDOM, format: Format = Format.RGB): List<String>

Examples

// Generate an attractive RGB randomly
val rgbString = RandomKolor().randomColor()

// Generate a light blue RGB 
val rgbString = RandomKolor().randomColor(hue = ColorHue(BLUE), luminosity = Luminosity.LIGHT)

// Generate three light blue oranges
val rgbStrings = RandomKolor().randomColors(count = 3, hue = ColorHue(ORANGE), luminosity = Luminosity.LIGHT)

Acknowledgements

• David Merfield’s original library
• Wei Wang’s swift port RandomColorSwift

TODO

• Currently only RGB is supported, would like to support other formats
• Add alpha to RGB

GitHub

https://github.com/brian-norman/RandomKolor