---
title: CGColorSpaceModel.unknown
framework: coregraphics
role: symbol
role_heading: Case
path: coregraphics/cgcolorspacemodel/unknown
---

# CGColorSpaceModel.unknown

An unknown color space model.

## Declaration

```swift
case unknown
```

## See Also

### Constants

- [CGColorSpaceModel.monochrome](coregraphics/cgcolorspacemodel/monochrome.md)
- [CGColorSpaceModel.rgb](coregraphics/cgcolorspacemodel/rgb.md)
- [CGColorSpaceModel.cmyk](coregraphics/cgcolorspacemodel/cmyk.md)
- [CGColorSpaceModel.lab](coregraphics/cgcolorspacemodel/lab.md)
- [CGColorSpaceModel.deviceN](coregraphics/cgcolorspacemodel/devicen.md)
- [CGColorSpaceModel.indexed](coregraphics/cgcolorspacemodel/indexed.md)
- [CGColorSpaceModel.pattern](coregraphics/cgcolorspacemodel/pattern.md)
- [CGColorSpaceModel.XYZ](coregraphics/cgcolorspacemodel/xyz.md)