Do you mean a blind corner cabinet as an upper cabinet? If so, those are worse than base blind corners. It's almost impossible to access things in the "blind corner" in an upper cabinet...unless you have very, very long arms and are tall so (1) you can actually reach inside the corner from the outside and (2) see what's there.
My MIL has blind corners in her kitchen...both upper & base and she doesn't use them...unless something falls back into them! She hates them!
Since you're wondering about a corner cabinet, have you considered what I think is called an "easy reach" that has a 90-degree cut (rather than diagonal)? For upper cabinets, I think they're the best option overall. I have a couple of pictures I saved for the future of BluBird's corner easy-reach cabinet.
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I think hers was built with one side wider than the the other but with a divider. They also are available 24" x 24" with a 12" opening on each side.
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Photo of Easy Reach cabinet with narrow "door" on one side.
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