Menu to select color

Question

I’m making a tool, and I need a menu for color selection. Could someone tell me how to do?
Something like that:

Answer 1

With HTML5 simply use input guy color:

Escolha a cor: <input type="color">

_{Note: not all browsers support this kind of input.}

Or else use a plugin Javascript, as the http://jscolor.com/

Answer 2

This particular image Picker is the seems to me to be the Spectrum. With it, just make the inclusion of the files

<script src='spectrum.js'></script>
<link rel='stylesheet' href='spectrum.css' />

and make the call as a jQuery plugin in your selector, something like:

$("#custom").spectrum({
    color: "#f00"
});