Online Accessibility Act This bill sets forth requirements for consumer-facing websites and mobile applications owned or operated by a private entity and guidance regarding standards for website accessibility by the disabled. Specifically, the bill prohibits the exclusion of an individual, by reason of disability, from participation in or being denied the full and equal benefits of the services of such a website or application or from being subjected to discrimination by a private owner or operator of such a website or application. Such a website or application shall be considered compliant if it is in substantial compliance with the Web Content Accessibility Guidelines 2.0 Level A and Level AA standard established by the Accessibility Guidelines Working Group. A noncompliant entity shall provide an alternative, equivalent means of access by individuals with disabilities. The Access Board must publish related standards. The bill sets forth provisions regarding administrative remedies and reporting of violations and enforcement by the Department of Justice and through private rights of action.