Section 84.86 - Conforming alternate versions(a) A recipient may use conforming alternate versions of web content, as defined by WCAG 2.1, to comply with § 84.84 only where it is not possible to make web content directly accessible due to technical or legal limitations.(b) WCAG 2.1 is incorporated by reference into this section with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51 . All material approved for incorporation by reference is available for inspection at HHS and at NARA. Contact HHS, OCR at: Office for Civil Rights, U.S. Department of Health and Human Services, 200 Independence Ave. SW, Room 509F, HHH Building, Washington, DC 20201; phone: (202) 545-4884; email: 504@hhs.gov. For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email fr.inspection@nara.gov. The material may be obtained from the World Wide Web Consortium (W3C) Web Accessibility Initiative ("WAI"), 401 Edgewater Place, Suite 600, Wakefield, MA 01880; phone: (339) 273-2711; email: contact@w3.org; website: www.w3.org/TR/2018/REC-WCAG21-20180605/ and https://perma.cc/UB8A-GG2F.