Mobile view background color

Hi!

I’m having trouble finding out what color the default background for the mobile view is, since I don’t know how to debug the code on a mobile device.

I need it for inserting Adsense ads, so that the background of the ads match that of the theme.

So I really just need the color code for the mobile view background, or, alternatively, a way to find it out by myself. It is some kind of grey.

Many thanks

Lindman