JsJava2.0 implements color operation,with which you can operate RGB color and convert between RGB value and Hex value.Example as follows:

<script> var hexColors=ColorUtils.toPaletteDatum(9,9); var str="<table>"; for(var i=0;i<hexColors.length;i++){ str+="<tr>"; for(var j=0;j<hexColors[i].length;j++){ str+="<td title='"+hexColors[i][j]+"' bgcolor='"+hexColors[i][j]+"'>&nbsp;&nbsp;</td>"; } str+="</tr>"; } str+="</table>"; document.write(str); </script> The result is :