Is there function to convert UIColor to Hue Saturation Brightness?

i can set uicolor with RGB values:

[UIColor colorWithRed:0.53 green:0.37 blue:0.11 alpha:1.00];

i can set uicolor with hsb values:

[UIColor colorWithHue:0.10 saturation:0.16 brightness:0.13 alpha:1.00];

i also could convert it back to RGB:

CGFloat* colors = CGColorGetComponents(Color1.CGColor);

But how i can get HSB from uicolor?