---
title: kColorSyncHDRDerivative
framework: colorsync
role: symbol
role_heading: Global Variable
platforms: [iOS 16.0+, iPadOS 16.0+, Mac Catalyst 13.0+, macOS 10.13+, tvOS 16.0+, visionOS 1.0+, watchOS 9.0+]
path: colorsync/kcolorsynchdrderivative
---

# kColorSyncHDRDerivative

A key for the HDR derivative to apply to the profile in a profile-sequence dictionary.

## Declaration

```swift
var kColorSyncHDRDerivative: Unmanaged<CFString>!
```

## See Also

### Handling HDR and extended range

- [kColorSyncExtendedRange](colorsync/kcolorsyncextendedrange.md)
- [kColorSyncConvertUseExtendedRange](colorsync/kcolorsyncconvertuseextendedrange.md)
- [kColorSyncTransformUseITU709OETF](colorsync/kcolorsynctransformuseitu709oetf.md)
- [kColorSyncPQDerivative](colorsync/kcolorsyncpqderivative.md)
- [kColorSyncHLGDerivative](colorsync/kcolorsynchlgderivative.md)