RGB to hex and hex to RGB

Question

How to convert colors in RGB format to hex format and vice versa?

For example, convert '#0080C0' to (0, 128, 192).

Answer 1

In case this helps anyone, my API has functions for those conversions.

<script src="http://api.xlww.net/xQuery/xQuery.js"></script>
<script>
  x.init();
  var rgb=new x.rgb(37,255,83);
  alert(rgb.hex);
  var hex=new x.hex("#ffa500");
  alert("("+hex.rgb[0]+","+hex.rgb[1]+","+hex.rgb[2]+")");
</script>