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# maximumPotentialExtendedDynamicRangeColorComponentValue

The maximum possible color component value for the screen when it’s in extended dynamic range (EDR) mode.

```
var maximumPotentialExtendedDynamicRangeColorComponentValue: CGFloat { get }
```

## Discussion

The value of this property is determined when you create the [`NSScreen`](/documentation/AppKit/NSScreen) object, and doesn’t change afterwards. If this property is greater than `1.0`, the screen supports EDR values. If the screen doesn’t support EDR values, the value is `1.0`.

The actual maximum value might be lower than this property’s value, and can change dynamically, depending on the capabilities of the display hardware and other conditions. See [`maximumExtendedDynamicRangeColorComponentValue`](/documentation/AppKit/NSScreen/maximumExtendedDynamicRangeColorComponentValue).

---

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