/**
 * @author Rivaledsouls
 * @version 1.0
 * Feel free to use this code as you wish as long as you cite
 * me, Rivaledsouls, for use of the code in any projects where 
 * you share the source.
 * (c) 2010
 */

package utils.color {
	
	public class RGB {

		private var color:uint;
		private var red:int;
		private var green:int;
		private var blue:int;
		/**
		 * Contructs an RGB object for containing Red Green and Blue values, and
		 * converting them to a Hex color
		 * @param r the Red value (0-255)
		 * @param g the Green value (0-255)
		 * @param b the Blue value (0-255)
		 */
		public function RGB(r:Number=0, g:Number=0, b:Number=0) {
			Red = r;
			Green = g;
			Blue = b;
		}
		
		/*
		 * Getters for each channel, converts from Hex
		 */
		public function get Red():int {
			return color >> 16;
		}
		public function get Green():int {
			return (color >> 8) & 0xFF;
		}
		public function get Blue():int {
			return color & 0x00FF;
		}
		/*
		 *Setters for each channel, converts to Hex 
		 */
		public function set Red(Value:int):void {
			red = (Value>255)? 255 : ((Value<0)?0:Value);
			color=getHex(red,green,blue);
		}
		public function set Green(Value:int):void {
			green = (Value>255)? 255 : ((Value<0)?0:Value);
			color=getHex(red,green,blue);
		}
		public function set Blue(Value:int):void {
			blue = (Value>255)? 255 : ((Value<0)?0:Value);
			color=getHex(red,green,blue);
		}
		/*
		 * Getter and setter for Hex value
		 */
		public function get Hex():uint {
			return color;
		}
		public function set Hex(Value:uint):void {
			color=Value;
		}
		
		/**
		 * A static method for directly converting from Red,Green,and Blue values
		 * to Hex.
		 * @param r the Red value (0-255)
		 * @param g the Green value (0-255)
		 * @param b the Blue value (0-255)
		 * @return the Hex value of the specified RGB color
		 */ 
		public static function getHex(r:int, g:int, b:int):uint{
			return (r<<16)|(g << 8)|b;
		}
	}
	
}

http://snipplr.com/view/34817/as3--hsl-to-rgb-class/

Can also be used with [HSL](http://snipplr.com/view/34817/as3--hsl-to-rgb-class/) class I posted for conversion from HSL to RGB.

AS3 - RGB class for RGB to Hex

ActionScript 3