"Pot calling the kettle black" ... but what if the kettle isn't black (figuratively speaking)?

The pot calling the kettle black is a well accepted idiom in English, and has many equivalents in other languages.

But there are some occasions when this phrase is not quite appropriate. When one uses this idiom, it seems that one is acknowledging that the transgression is equally applicable to both parties being referenced.

What if the accuser (i.e., pot) is known to be guilty of a perceived transgression, but the target (kettle) is unjustly accused? Is there another appropriate idiom that captures the essence of the situation?

Solution 1:

Attributing one's own faults to others could be considered projection.

Solution 2:

The subject here is the pot, not the kettle.

This expression is used to declare that an accuser (the pot) is not innocent themselves, and is essentially being a hypocrite. The actual colour of the kettle is secondary, but it's assumed to be guilty too.

A common expression that accuses hypocrisy without calling other parties into question is:

People who live in glass houses shouldn't throw stones.