Isaiah 64:6 says all our righteous acts are like what?

Answer: Filthy rags

"All our righteous acts are like filthy rags; we all wither like a leaf, and our iniquities carry us away like the wind."

“Each of us has become like something unclean, and all our righteous acts are like filthy rags; we all wither like a leaf, and our iniquities carry us away like the wind.”— Isaiah 64:6 (BSB)