What is the default page background color?

Hello!

Great theme! It’s my first time working with it and I am impressed.

I wanted to add a tag cloud in my sidebar, but it ended up waaay up high, right underneath the menu bar. I have tried anything to insert some sort of spacer but couldn’t (advice on this happily accepted too!)
In the end I found that inserting a circle icon with no text was a perfect spacer. This was when I realised the default background colour is not white, but some shade of off-white.

Can anyone tell me what the hex-code for this colour is, so I can change my icon to this colour and make it blend in as a sidebar spacer?

Cheers,
Tamara