Calculate whether a color is light or dark, based on a commonly known brightness formula. - Android Graphics

Android examples for Graphics:Color Darken

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Description

Calculate whether a color is light or dark, based on a commonly known brightness formula.

Demo Code


//package com.java2s;
import android.graphics.Color;

public class Main {
    private static final int BRIGHTNESS_THRESHOLD = 130;

    /**/*from  ww  w.j a v a  2 s  .  com*/
     * Calculate whether a color is light or dark, based on a commonly known
     * brightness formula.
     * 
     * @see {@literal http://en.wikipedia.org/wiki/HSV_color_space%23Lightness}
     */
    public static boolean isColorDark(int color) {
        return (((30 * Color.red(color)) + (59 * Color.green(color)) + (11 * Color
                .blue(color))) / 100) <= BRIGHTNESS_THRESHOLD;
    }
}

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