Answer:
There were no "separate but equal" laws for slaves. Slaves were considered unequal and were treated as such.
The laws requiring racially "separate but equal" public accommodations are called Jim Crow laws, and developed in reaction to the Civil War and Reconstruction. After the slaves were emancipated, the United States ratified the Thirteenth, Fourteenth and Fifteenth Amendments to the Constitution, outlawing slavery, attempting to create equal protection for African-Americans, and granting African-American men the right to vote. Many white people opposed equality for former slaves, and felt threatened by the new social order. Jim Crow laws were a desperate attempt to keep African-Americans "in their place," because many whites considered them inferior.