I just checked on my Liebherr, (HCB 1561) and while it is not next to a wall, it does not swing past the edge of door at 90*. So the only clearance space you will need is the depth of your handle to clear the wall.
(Mine is the fully integrated model, so I don't know if same hinges are used with the freestanding units.)

Thanks so much! This is helpful.

Hi!
Thanks for your interest in our refrigerators! For all models, the doors need to open to at least 90 degrees so the crispers can be opened and removed. On the fully integrated models, you can actually limit the door swing to 90 degrees.
On our website, home.liebherr.com, you can download the design guide appropriate to the model you are interested in. It will show you exactly how much clearance you need, and - if available - how to limit the door swing to 90 degrees.
Hope this helps and if you have any questions, please message us here or feel free to email us at socialmediaUS.home [at] Liebherr . com!