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RGBtoHex(r, g, b)

Last updated November 27, 2001

author

Eric Carlisle

Version: 1 | Requires: CF5 | Library: UtilityLib

Description:
Converts an RGB color value into a hexadecimal color value.

Return Values:
Returns a string.

Example:

<cfoutput>
00,151,102: #RGBtoHex(00,51,102)#<BR>
255,255,255: #RGBtoHex(255,255,255)#<BR>
0,0,0: #RGBtoHex(0,0,0)#<BR>
</cfoutput>

Parameters:

Name Description Required
r Red value triplet (0-255) Yes
g Green value triplet (0-255) Yes
b Blue value triplet (0-255) Yes

Full UDF Source:

/**
 * Converts an RGB color value into a hexadecimal color value.
 * 
 * @param r 	 Red value triplet (0-255) 
 * @param g 	 Green value triplet (0-255) 
 * @param b 	 Blue value triplet (0-255) 
 * @return Returns a string. 
 * @author Eric Carlisle (ericc@nc.rr.com) 
 * @version 1, November 27, 2001 
 */
function RGBtoHex(r,g,b){
  Var hexColor="";
  Var hexPart = '';
  Var i=0;
	
  /* Loop through the Arguments array, containing the RGB triplets */
  for (i=1; i lte 3; i=i+1){
    /* Derive hex color part */
    hexPart = formatBaseN(Arguments[i],16);
		
    /* Pad with "0" if needed */
    if (len(hexPart) eq 1){
      hexPart = '0' & hexPart;	
    } 
		
    /* Add hex color part to hexadecimal color string */
    hexColor = hexColor & hexPart;
  }
  return hexColor;
}
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