Android color Contrast

1. Android Color Contrast

    /** calculates the constrast between the colors, using the algorithm provided by the WCAG v2.        */public static float computecontrastbetweencolors (int bg, int fg) {Float BgR = color.red (BG)/255f;        float BgG = color.green (BG)/255f;        float BgB = color.blue (BG)/255f; BgR = (BgR < 0.03928f)?        BGR/12.92F: (float) Math.pow ((BgR + 0.055f)/1.055f, 2.4f); BgG = (BgG < 0.03928f)?        BGG/12.92F: (float) Math.pow ((BgG + 0.055f)/1.055f, 2.4f); BGB = (BGB < 0.03928f)?        BGB/12.92F: (float) Math.pow ((BgB + 0.055f)/1.055f, 2.4f);                float BgL = 0.2126f * BgR + 0.7152f * bgG + 0.0722f * BgB;        float FgR = color.red (FG)/255f;        float FgG = Color.green (FG)/255f;        float FgB = Color.Blue (FG)/255f; FgR = (FgR < 0.03928f)?        FGR/12.92F: (float) Math.pow ((FgR + 0.055f)/1.055f, 2.4f); FgG = (FgG < 0.03928f)?        FGG/12.92F: (float) Math.pow ((FgG + 0.055f)/1.055f, 2.4f); FGB = (FgB < 0.03928f)?        FGB/12.92F: (float) Math.pow ((FgB + 0.055f)/1.055f, 2.4f);        float FgL = 0.2126f * FgR + 0.7152f * fgG + 0.0722f * FgB;    Return Math.Abs ((FgL + 0.05f)/(BgL + 0.05f)); }

Android color Contrast