# getWhite(_:alpha:) Returns the grayscale components of the color. ``` func getWhite(_ white: UnsafeMutablePointer?, alpha: UnsafeMutablePointer?) -> Bool ``` ## Parameters `white` On return, the grayscale component of the color object. On applications linked for iOS 10 or later, an extended range gray color space specifies the grayscale component and can have any value. Values between `0.0` and `1.0` are inside the sRGB color gamut. On earlier versions of iOS, the specified value is always between `0.0` and `1.0`. `alpha` On return, the opacity component of the color object, specified as a value between `0.0` and `1.0`. ## Return Value if the color could be converted, otherwise. ## Discussion If the color is in a compatible color space, it converts into grayscale format and its returned to your application. If the color isn’t in a compatible color space, the parameters don’t change. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)