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Equivalents >>> Hex Rgb Converter.

Converts Hex to RGB and back in real-time. Also displays current value as background color.

Color/Code Red Green Blue
0-255
HEX

Add the below code to the <body> section of your page:

<script language="javascript" type="text/javascript">
/* Visit http://www.yaldex.com/ for full source code
and get more free JavaScript, CSS and DHTML scripts! */
<!-- Begin
function NumToHex(num1,num2) {
strNum=document.HexRgb.elements[num1].value;
for(i = 0; i < strNum.length; i++) {
chr=strNum.substring(i, i + 1);
if((isNaN(chr))||(chr == ' ')) {
alert('You must enter a digit between 0 and 9!');
document.HexRgb.elements[num1].select();
document.HexRgb.elements[num2].value='';
return false;
   }
}
if(strNum > 255) {
alert('You must enter a number between 0 and 255!');
document.HexRgb.elements[num1].select();
document.HexRgb.elements[num2].value='';
return false;
}
else {
base = strNum / 16;
rem = strNum % 16;
base = base - (rem / 16);
baseS = MakeHex(base);
remS = MakeHex(rem);
document.HexRgb.elements[num2].value=baseS + '' + remS;
ChangeBackground(3, 4, 5);
return true;
   }
}
function MakeHex(x) {
if((x >= 0) && (x <= 9))
return x;
else {
switch(x) {
case 10: return "A";
case 11: return "B";
case 12: return "C";
case 13: return "D";
case 14: return "E";
case 15: return "F";
      }
   }
}
function HexToNum(num1,num2) {
numberS = document.HexRgb.elements[num1].value;
tens = MakeNum(numberS.substring(0,1));
if(tens == 'X') {
document.HexRgb.elements[num1].select();
document.HexRgb.elements[num2].value='';
return false;
}
ones = 0;
if(numberS.length > 1) // means two characters entered
ones=MakeNum(numberS.substring(1,2));
if(ones == 'X') {
document.HexRgb.elements[num1].select();
document.HexRgb.elements[num2].value='';
return false;
}
document.HexRgb.elements[num2].value = (tens * 16) + (ones * 1);
document.HexRgb.elements[num1].value = document.HexRgb.elements[num1].value.toUpperCase();
ChangeBackground(3, 4, 5);
return true;
}
function MakeNum(str) {
if((str >= 0) && (str <= 9))
return str;
switch(str.toUpperCase()) {
case "A": return 10;
case "B": return 11;
case "C": return 12;
case "D": return 13;
case "E": return 14;
case "F": return 15;
default:  alert('You must choose a number between 0 and 9 or a letter between A and F!');
return 'X';
   }
}
function ChangeBackground(num1, num2, num3) {
document.bgColor = '#'+document.HexRgb.elements[num1].value + document.HexRgb.elements[num2].value + document.HexRgb.elements[num3].value;
}
//  End -->
</script>
<center>
<form name="HexRgb" id="HexRgb">
<table border=1 align=center cellpadding=10>
<tr>
<th>
Color/Code</th>
<th>
Red</th>
<th>
Green</th>
<th>
Blue</th>
</tr>
<tr>
<th>
0-255</th>
<td>
<input type=text name=rr_num size=4 maxlength=3 onKeyUp="return NumToHex(0,3);"></td>
<td>
<input type=text name=gg_num size=4 maxlength=3 onKeyUp="return NumToHex(1,4);"></td>
<td>
<input type=text name=bb_num size=4 maxlength=3 onKeyUp="return NumToHex(2,5);"></td>
</tr>
<tr>
<th>
HEX</th>
<td>
<input type=text name=rr_hex size=4 maxlength=2 onKeyUp="return HexToNum(3,0);"></td>
<td>
<input type=text name=gg_hex size=4 maxlength=2 onKeyUp="return HexToNum(4,1);"></td>
<td>
<input type=text name=bb_hex size=4 maxlength=2 onKeyUp="return HexToNum(5,2);"></td>
</tr>
</table>
</form>
</center>

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