Wall paper removal help!

https://preview.redd.it/njmz2bo6ilee1.png?width=1056&format=png&auto=webp&s=526e0bcfc3ce075b970a40abf6b309af3b36941e

This is my first time removing wall paper and I'm uncertain if the tan colored surface is dried glue, or a lighter neutral base of paint over the dark blue so it wouldn't be visible through the wall paper.