How do I write a RGB color value in JavaScript?

Question

I am trying to change the color of the function swapFE() below and I can\'t figure out how to write it. I was told to change the color of the phrase node to the color value

Answer 1

dec2hex = function (d) {
  if (d > 15)
    { return d.toString(16) } else
    { return "0" + d.toString(16) }
}
rgb = function (r, g, b) { return "#" + dec2hex(r) + dec2hex(g) + dec2hex(b) };

and:

parent.childNodes[1].style.color = rgb(155, 102, 102);