How to convert Color type to hex and vice-versa while retaining alpha information?

import SwiftUI

extension Color {
    init(hex: String) {
        var hexSanitized = hex.trimmingCharacters(in: .whitespacesAndNewlines)
        hexSanitized = hexSanitized.replacingOccurrences(of: "#", with: "")

        var rgb: UInt64 = 0

        Scanner(string: hexSanitized).scanHexInt64(&rgb)

        let red = Double((rgb & 0xFF000000) >> 24) / 255.0
        let green = Double((rgb & 0x00FF0000) >> 16) / 255.0
        let blue = Double((rgb & 0x0000FF00) >> 8) / 255.0
        let alpha = Double(rgb & 0x000000FF) / 255.0
        
        self.init(.sRGB, red: red, green: green, blue: blue, opacity: alpha)
    }

    var hex: String {
        if let nsColor = NSColor(self).usingColorSpace(.sRGB) {
            let red = Int(nsColor.redComponent * 255)
            let green = Int(nsColor.greenComponent * 255)
            let blue = Int(nsColor.blueComponent * 255)
            let alpha = Int(nsColor.alphaComponent * 255)

            return String(format: "#%02X%02X%02X%02X", red, green, blue, alpha)
        } else {
            // Default to .gray color if NSColor conversion fails
            return "#8e8e93ff"
        }
    }
}

var someColor: Color = Color(hex: "#FFFFFFFF") // white color with 100% opacity
var someColorHex: String = someColor.hex // white color in hexadecimal format