---
title: extendedLinearGray
framework: coregraphics
role: symbol
role_heading: Type Property
path: coregraphics/cgcolorspace/extendedlineargray
---

# extendedLinearGray

The extended gray color space with a linear transfer function.

## Declaration

```swift
class let extendedLinearGray: CFString
```

## Discussion

Discussion This color space has the same colorimetry as linearGray; in addition, you may encode component values below 0.0 and above 1.0.

## See Also

### Accessing System-Defined Color Spaces

- [displayP3](coregraphics/cgcolorspace/displayp3.md)
- [displayP3_HLG](coregraphics/cgcolorspace/displayp3_hlg.md)
- [displayP3_PQ_EOTF](coregraphics/cgcolorspace/displayp3_pq_eotf.md)
- [extendedLinearDisplayP3](coregraphics/cgcolorspace/extendedlineardisplayp3.md)
- [sRGB](coregraphics/cgcolorspace/srgb.md)
- [linearSRGB](coregraphics/cgcolorspace/linearsrgb.md)
- [extendedSRGB](coregraphics/cgcolorspace/extendedsrgb.md)
- [extendedLinearSRGB](coregraphics/cgcolorspace/extendedlinearsrgb.md)
- [genericGrayGamma2_2](coregraphics/cgcolorspace/genericgraygamma2_2.md)
- [extendedGray](coregraphics/cgcolorspace/extendedgray.md)
- [linearGray](coregraphics/cgcolorspace/lineargray.md)
- [genericCMYK](coregraphics/cgcolorspace/genericcmyk.md)
- [genericRGBLinear](coregraphics/cgcolorspace/genericrgblinear.md)
- [genericXYZ](coregraphics/cgcolorspace/genericxyz.md)
- [genericLab](coregraphics/cgcolorspace/genericlab.md)