This Bible contradiction is from the Skeptic's Annotated Bible.
Luke 23:11 View context
And Herod with his men of war set him at nought, and mocked [him], and arrayed him in a gorgeous robe, and sent him again to Pilate.
Matthew 27:27-28 View context
Then the soldiers of the governor took Jesus into the common hall, and gathered unto him the whole band [of soldiers].
And they stripped him, and put on him a scarlet robe.
Mark 15:15-17 View context
And [so] Pilate, willing to content the people, released Barabbas unto them, and delivered Jesus, when he had scourged [him], to be crucified.
And the soldiers led him away into the hall, called Praetorium; and they call together the whole band.
And they clothed him with purple, and platted a crown of thorns, and put it about his [head],
John 19:1-2 View context
Then Pilate therefore took Jesus, and scourged [him].
And the soldiers platted a crown of thorns, and put [it] on his head, and they put on him a purple robe,