Welcome Ania from another new member!
There are many blacks and near blacks. Yours has nice purple-black beards and purple spathes (papery sheath around base of bud). This fits "Before the Storm" a popular black. But there are likely many others that have these characteristics, too.
Sorry, I don't know how to post a picture from the database, yet--there are many pix there of BtS.
This is from my garden:
Before the Storm:
