Come aggiungere un colore jetpack comporre

Jetpack Comporre ottenere il Colore Hex

private fun Color.toHexCode(): String {
    val red = this.red * 255
    val green = this.green * 255
    val blue = this.blue * 255
    return String.format("#%02x%02x%02x", red.toInt(), green.toInt(), blue.toInt())
}