Colo. Rev. Stat. § 14-15-106 – Restrictions as to minors and wards.

(1) A county clerk and recorder shall not issue a civil union license if either party to the intended civil union is:
1. (a) Under eighteen years of age; or
2. (b) Eighteen years of age or older and under guardianship, unless the party under guardianship has the written consent of his or her guardian.
(2) A violation of subsection (1) of this section makes the civil union void.

Source: L. 2013: Entire article added, (SB 13-011), ch. 49, p. 149, § 1, effective May 1.