How do I use rgb with cdn?

[amchconsult]

How do I use rgb with cdn?

// box invoice number
page.drawRectangle({
    x: width - 160,
    y: height - 70,
    width: width - 65,
    height: 30,
    borderColor: rgb(1, 0, 0),
    borderWidth: 1.5,
})

thank you