C.R.S. § 18-8-504
18-8-504. False swearing
18-8-504. False swearing. (1) A person commits false swearing if he knowingly makes a materially false statement, other than those prohibited by sections 18-8-502 and 18-8-503, which he does not believe to be true, under an oath required or authorized by law.
(2) False swearing is a petty offense.