PLease suggest color settings (value) for Graphic Card and LCD monitor

I am confused that what should be the ideal setting for graphic card and LCD monitor..

coz there are two settings:

First one is through Graphic card

Second one through LCD monitor Button on its display

>>>>>the LCD monitor button menu contain brightness and Contrast out of 100 , what value should be there in LCD monitor and also what should be the value in graphic card...

>> I want to know about Both setting .:-

1. setting in graphic card.

2. IN LCD monitor(brightness and contrast out of 100)