SwiftUI how to create color from hex value

swiftui_color_from_hex.swift

extension Color {
    static func hexStringToColor (hex:String, opacity: Double = 1.0) -> Color {
        var cString:String = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()
        if (cString.hasPrefix("#")) {
            cString.remove(at: cString.startIndex)
        }
        if ((cString.count) != 6) {
            return Color.gray
        }
        var rgbValue:UInt64 = 0
        Scanner(string: cString).scanHexInt64(&rgbValue)
        return Color(
            red: Double((rgbValue & 0xFF0000) >> 16) / 255.0,
            green: Double((rgbValue & 0x00FF00) >> 8) / 255.0,
            blue: Double(rgbValue & 0x0000FF) / 255.0,
            opacity: Double(opacity)
        )
    }
}