Question

Possible Duplicate:
Check if UIColor is dark or bright?

Is there simple way to determine if a UIColor is dark or light? I’d like to put a label on a dynamic background and change its text color to white if the background’s dark or to black if its a light color.

Answer 1

I haven’t tested this, but it may work for you…

-(BOOL) isLightColor:(UIColor*)clr {
    CGFloat white = 0;
    [clr getWhite:&white alpha:nil];
    return (white >= 0.5);
}