Returns the complimentary (opposite) color. : Color « 2D Graphics « Android

Returns the complimentary (opposite) color.

//package mobilesmil.utils;


 * Utilities for performing common color-related tasks.
 * @author Ryan Ware
public class ColorUtils {
  public static int getComplimentColor(Paint paint) {
    return getComplimentColor(paint.getColor());
   * Returns the complimentary (opposite) color.
   * @param color int RGB color to return the compliment of
   * @return int RGB of compliment color
  public static int getComplimentColor(int color) {
    // get existing colors
    int alpha = Color.alpha(color);
    int red =;
    int blue =;
    int green =;
    // find compliments
    red = (~red) & 0xff;
    blue = (~blue) & 0xff;
    green = (~green) & 0xff;
    return Color.argb(alpha, red, green, blue);
   * Converts an int RGB color representation into a hexadecimal {@link String}.
   * @param argbColor int RGB color
   * @return {@link String} hexadecimal color representation
  public static String getHexStringForARGB(int argbColor) {
    String hexString = "#";
    hexString += ARGBToHex(Color.alpha(argbColor));
    hexString += ARGBToHex(;
    hexString += ARGBToHex(;
    hexString += ARGBToHex(;
    return hexString;
   * Converts an int R, G, or B value into a hexadecimal {@link String}.
   * @param rgbVal int R, G, or B value
   * @return {@link String} hexadecimal value
  private static String ARGBToHex(int rgbVal) {
    String hexReference = "0123456789ABCDEF";
    rgbVal = Math.max(0,rgbVal);
    rgbVal = Math.min(rgbVal,255);
    rgbVal = Math.round(rgbVal);
    return String.valueOf( hexReference.charAt((rgbVal-rgbVal%16)/16) + "" + hexReference.charAt(rgbVal%16) );


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