public static int contrast(Color left,Color right) throws ServletException {
  return (Math.max(left.getRed(),right.getRed()) - Math.min(left.getRed(),right.getRed())) + (Math.max(left.getGreen(),right.getGreen()) - Math.min(left.getGreen(),right.getGreen())) + (Math.max(left.getBlue(),right.getBlue()) - Math.max(left.getBlue(),right.getBlue()));
}

public static int contrast ( Color left , Color right ) throws ServletException { return ( Math . max ( left . getRed ( ) , right . getRed ( ) ) - Math . min ( left . getRed ( ) , right . getRed ( ) ) ) + ( Math . max ( left . getGreen ( ) , right . getGreen ( ) ) - Math . min ( left . getGreen ( ) , right . getGreen ( ) ) ) + ( Math . max ( left . getBlue ( ) , right . getBlue ( ) ) - Math . max ( left . getBlue ( ) , right . getBlue ( ) ) ) ; }
calculate the contrast between 2 colors
