hex.swift

import UIKit.UIColor

extension UIColor {
    
    convenience init(hex: String) {
        // Initializer supports work with formatts: "#FFFFFF", "FFFFFF"
        let cString: String = hex.trimmingCharacters(in: .whitespacesAndNewlines)
            .uppercased()
            .replacingOccurrences(of: "#", with: "")
        
        guard cString.count == 6 else {
            self.init(white: 1.0, alpha: 1.0)
            return
        }
        
        let scanner = Scanner(string: cString)
        var rgbValue: UInt32 = 0
        scanner.scanHexInt32(&rgbValue)
        
        self.init(
            red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
            green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
            blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
            alpha: CGFloat(1.0)
        )
    }
    
}