UIColor from Hex String

extension UIColor {
	public convenience init?(hex: String) {
        let r, g, b, a: CGFloat         
        	if hex.hasPrefix("#") {
            let start = hex.index(hex.startIndex, offsetBy: 1)
            var hexColor = String(hex[start...])
			if hexColor.count == 6 {
            	hexColor += "ff"
            }
            if hexColor.count == 8 {
                let scanner = Scanner(string: hexColor)
                var hexNumber: UInt64 = 0
                if scanner.scanHexInt64(&hexNumber) {
                    r = CGFloat((hexNumber & 0xff000000) >> 24) / 255
                    g = CGFloat((hexNumber & 0x00ff0000) >> 16) / 255
                    b = CGFloat((hexNumber & 0x0000ff00) >> 8) / 255
                    a = CGFloat(hexNumber & 0x000000ff) / 255
                    self.init(red: r, green: g, blue: b, alpha: a)
                    return
                }
            }
        }
        return nil
    }
}

https://www.hackingwithswift.com/example-code/uicolor/how-to-convert-a-hex-color-to-a-uicolor