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# CGColorSpaceCreateDeviceRGB()

Creates a device-dependent RGB color space.

```
func CGColorSpaceCreateDeviceRGB() -> CGColorSpace
```

## Return Value

A device-dependent RGB color space. In Objective-C, you’re responsible for releasing this object by calling [`CGColorSpaceRelease`](/documentation/CoreGraphics/CGColorSpaceRelease). If unsuccessful, returns `NULL`.

## Discussion

Colors in a device-dependent color space are not transformed or otherwise modified when displayed on an output device—that is, there is no attempt to maintain the visual appearance of a color. As a consequence, colors in a device color space often appear different when displayed on different output devices. For this reason, device color spaces are not recommended when color preservation is important.

---

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