We have sort of tossed this question around in the past, but here is the text of the Thirteenth Amendment:
Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.
(emphasis added). So let’s say a state has a law that if you jaywalk, you are sold into chattel slavery. Constitutional? If that is too absurd (maybe you take the Kennedy/O’ Connor version of the Eighth Amendment) then how about for a serious felony like burglary or armed robbery. The punishment is literally that you are sold to another citizen as chattel. Does this wording allow the punishment?
I have an opinion, but if I may, I will wait for others first.
ETA: Oh, and it is enforced in a non-racial or gendered way. Everyone agrees that it is enforced even handedly against black and white, male and female, etc.