Hue is the all-in-one coloring utility that you'll ever need.

You can easily use hex colors with the .hex method on UIColor. It supports the following hex formats #ffffff, ffffff, #fff, fff

let white = UIColor.hex("#ffffff")
let black = UIColor.hex("#000000")
let red = UIColor.hex("#ff0000")
let blue = UIColor.hex("#0000ff")
let green = UIColor.hex("#00ff00")
let yellow = UIColor.hex("#ffff00")

let white = UIColor.hex("#ffffff")
let black = UIColor.hex("#000000")

if white.isDarkColor {} // return false
if white.isBlackOrWhite {} // return true

.alpha is a sugar for colorWithAlphaComponent, internally it does the exact same thing, think of it as a lipstick for your implementation.

let colorWithAlpha = myColor.alpha(0.75)

You can easily create gradient layers using the gradient() method on arrays with UIColor. As an extra bonus, you can also add a transform closure if you want to modify the CAGradientLayer.

let gradient = [UIColor.blackColor(), UIColor.orangeColor()].gradient()

let secondGradient = [UIColor.blackColor(), UIColor.orangeColor()].gradient { gradient in
  gradient.locations = [0.25, 1.0]
  return gradient
}

let image = UIImage(named: "My Image")
let (background, primary, secondary, detail) = image.colors()

The demo also features Spots for rendering the Carousel view.

Example code:

let color = UIColor.hex("#3b5998")
backgroundColor = color
label.textColor = color.isDarkColor ? UIColor.whiteColor() : UIColor.darkGrayColor()

This examples shows how much fun you can have with combining CAGradientLayer with CABasicAnimation. It uses .hex for getting the colors and .gradient() for transforming a collection of UIColor's into a CAGradientLayer.

The demo features Spots for rendering the list view and Fakery for generating random content strings.

Extract from the demo:

lazy var gradient: CAGradientLayer = [
  UIColor.hex("#FD4340"),
  UIColor.hex("#CE2BAE")
  ].gradient { gradient in
    gradient.speed = 0
    gradient.timeOffset = 0

    return gradient
  }

Hue is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'Hue'

Hyper made this with ❤️. If you’re using this library we probably want to hire you! Send us an email at [email protected].

We would love you to contribute to Hue, check the CONTRIBUTING file for more info.

Credit goes out to Panic Inc who created ColorArt and @jathu for his work on UIImageColors which deeply inspired the functionality behind the image color analysis.

Hue is available under the MIT license. See the LICENSE file for more info.