Colors-kit is a zero-dependency module that can help you with a variety of color related tasks, such as:

• Converting colors between different formats.
• Creating color palettes.
• Rating the contrast of two colors based on WCAG (Web Content Accessibility Guidelines).
• Generating random colors.
• Simulating different types of color blindness.
• Extracting color palettes from an image.

Installation

npm install colors-kit

Usage

The following examples will give you a glance of what you can achieve with this library. To know more about the usage of the library check the documentation.

Validate

The Validate API helps validate colors. It ensures that colors have the correct value within the range of their current format. If a value is not within the correct range, the method will throw an error.

validateCmyk({ c: 69, m: 0, y: 42, k: 17 }) // Valid

validateCmyk({ c: 69, m: 0, y: 20 })
// Expected output: "Error: Expected property key (k) to be of type number, but got undefined."

validateHex("#45AA0F") // Valid

validateHex("45AAF4")
// Expected output: "Error: A hash symbol (#) must be present at the begining of the color."

Convert

The Convert API can handle five input color formats and convert them to seven output color formats.

hslToRgb({ h: 143, s: 62, l: 54 })
// Expected output: { r: 66, g: 211, b: 122 }

rgbToHex({ r: 66, g: 211, b: 122 })
// Expected output: '#42D37A'

Random

The Random API can create a random color in any of the seven formats the library handles.

getRandomLab()
// Expected output: { l: 45, a: -81, b: 67 }

getRandomHsv()
// Expected output: { h: 284, s: 100, v: 13 }

Color Blind

The Color Blind API can simulate different types of color blindness.

toDeuteranomaly('#42D37A')
// Expected output: '#5fad86'

toTritanopia('#f4fa53')
// Expected output: '#f49bb2'

toProtanopia({ r: 45, g: 75, b: 200 })
// Expected output: { r: 57, g: 58, b: 170 }

Palette

The Palette API can generate a color palettes of many different types.

makeAnalogousPalette('#3e7a72', 5)
// Expected output: ['#3e7a72', '#3e647a', '#3d457a', '#543e7a', '#723e7a']

makeMonochromaticPalette({ r: 2, g: 69, b: 0 }, 2)
// Expected output: [
//  { r: 2, g: 69, b: 0 },
//  { r: 22, g: 89, b: 12 }
// ]

From Image

The fromImage API work with the colors present on an image.

const imageUrl = 'https://e1.pxfuel.com/desktop-wallpaper/763/1015/desktop-wallpaper-6-blue-and-pink-landscape-nature-landscape-thumbnail.jpg'

async function extract() {
  const colors = await extractPalette(imageUrl, 5)

  return colors
}

extract()
// Expected output: ["#8c84ea', '#e7a6f9', '#3b7ee4', '#080419', '#3d2585']

Rate

The rate API rates colors based on certain properties and features. Like the Web Content Accessibility Guidelines (WCAG) criteria for contrast rate.

rateContrast(['#002719', '#c49c1a'])
// Expected output: {
//   contrastValue: 6.2,
//   AA: {
//     smallText: true,
//     largeText: true,
//     uiComponent: true
//   },
//   AAA: {
//     smallText: false,
//     largeText: true,
//     uiComponent: true
//   }
// }

Typescript

This library is build with vanilla typescript, so you will find the types you need to work on the types.d.ts file. See the documentation to know more about the interfaces and types used.