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

A simple answer for rgb to hex

    function rgbtohex(r,g,b){
        return "#" + (Math.round(r) * 65536 + Math.round(g) * 256 + Math.round(b)).toString(16));
    }