Terms and Conditions
Last updated: September 2026. Please read these terms carefully before utilizing our web accessibility instruments.
1. Acceptance of Terms
By accessing or using onlinecontrastchecker.com (the "Service", "Website", or "Tool"), you agree to be bound by these Terms and Conditions. If you do not agree to all of these terms, please do not access or use our Service.
2. Permitted Use and License
onlinecontrastchecker.com grants you a worldwide, royalty-free, non-exclusive license to use the website and its mathematical calculation engines for personal, educational, commercial, and enterprise design and auditing purposes. You are permitted to:
- Audit web, mobile, and digital print color palettes for accessibility compliance.
- Export and copy CSS custom variables, Markdown compliance reports, and shareable URL audit links.
- Reference our color science documentation and WCAG guidelines in professional audits.
3. Prohibited Conduct
When using the Service, you agree not to:
- Attempt to disrupt, overload, or impair the stability and security of our hosting infrastructure through automated denial-of-service (DoS) attacks.
- Frame or embed the service in a deceptive manner intended to mislead users regarding its origin or affiliation.
- Reverse engineer or misuse native browser APIs in any manner that infringes applicable privacy regulations.
4. Disclaimer of Warranties & Legal Advice
The calculations and recommendations provided by onlinecontrastchecker.com are strictly based on standard mathematical formulas from W3C WCAG specifications and published optical research. However, this Service is provided "AS IS" and "AS AVAILABLE". Using this tool does not constitute formal legal counsel or an official guarantee of immunity from digital accessibility lawsuits (such as ADA Title III or Section 508 claims). Total compliance requires holistic manual and assistive technology evaluation.
5. Limitation of Liability
To the maximum extent permitted by law, onlinecontrastchecker.com, its maintainers, and contributors shall not be held liable for any direct, indirect, incidental, consequential, or punitive damages arising from your use of, or inability to use, this tool or reliance on its calculated ratios.
6. Modifications to the Service and Terms
We reserve the right to modify, update, or retire features of the tool, or update these terms at any time without prior notice. Continued use of the website following any posted modifications constitutes your acceptance of the revised Terms and Conditions.
7. Inquiries
For questions regarding these Terms, please reach out via our Contact Us page.