Depending on the picture mode, the colors may appear darker.
Try this
Restore the standard picture mode or adjust the color density.
Changing [Picture Mode] in the Settings menu
2022 WebOS 22
Press the 
button on the TV remote and select [All Settings] → [Picture] → [Select Mode].
Turn on the TV and press the [Settings] button on your TV remote.
Select [All Settings] in the [Settings] menu.
Select [All Settings] in the [Settings] menu.
1. Select [Select Mode] in [Picture].
2. Select the mode you want to use in [Select Mode].
3. To change [Color], select [Advanced Settings] in [Picture].
4. Select [Color].
5. Adjust [Color Depth] while checking how colors appear on the screen.
Adjust [Brightness] or [Clarity] in the same manner.
Adjust [Brightness] or [Clarity] in the same manner.
2017 WebOS 3.5
Select [Home] → [Settings] → [View All Settings] → [Picture] → [Picture Mode Settings] → [Picture Mode] → [Vivid or Standard].
Smart TV (NETCAST)
Select [Smart] → [Settings] → [Picture] → [Picture Mode] → [Standard or Vivid].
General TV
Select [Menu (Detailed Settings)] → [Picture] → [Picture Mode] → [Clear Picture].
This guide was created for all models, so the images or content may be different from your product.
