Hash string to UIColor in Swift

hashStringToColor.swift

func hashStringToColor(string: String) -> UIColor {
    var hash: Int = string.hashValue
    var r: Int = (hash & 0xFF0000) >> 16
    var g: Int = (hash & 0x00FF00) >> 8
    var b: Int = (hash & 0x0000FF)
    return rgbaToUIColor(r: r, g: g, b: b, a: 1.0)
}

func rgbaToUIColor(#r: Int, #g: Int, #b: Int, #a: Float) -> UIColor {
    let floatRed = CGFloat(r) / 255.0
    let floatGreen = CGFloat(g) / 255.0
    let floatBlue = CGFloat(b) / 255.0
    return UIColor(red: floatRed, green: floatGreen, blue: floatBlue, alpha: 1.0)
}