# CVImageBufferCreateColorSpaceFromAttachments(_:) Attempts to create a Core Graphics color space from the image buffer’s attachments that you specify. ``` func CVImageBufferCreateColorSpaceFromAttachments(_ attachments: CFDictionary) -> Unmanaged? ``` ## Parameters `attachments` The dictionary of attachments for an image buffer, which you can obtain by calling [`CVBufferCopyAttachments(_:_:)`](/documentation/CoreVideo/CVBufferCopyAttachments(_:_:)) on the image buffer. ## Return Value A object that represents the color space of the image buffer, or if the dictionary doesn’t contain the information required to create a instance. ## Discussion To generate a instance, the attachments dictionary needs to include values for either: 1. [`kCVImageBufferICCProfileKey`](/documentation/CoreVideo/kCVImageBufferICCProfileKey) 2. [`kCVImageBufferColorPrimariesKey`](/documentation/CoreVideo/kCVImageBufferColorPrimariesKey), [`kCVImageBufferTransferFunctionKey`](/documentation/CoreVideo/kCVImageBufferTransferFunctionKey), [`kCVImageBufferYCbCrMatrixKey`](/documentation/CoreVideo/kCVImageBufferYCbCrMatrixKey), and possibly [`kCVImageBufferGammaLevelKey`](/documentation/CoreVideo/kCVImageBufferGammaLevelKey) Use to release the color space when you’re done with it. --- 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)