HueCheck Palette Lab
Terms of service
Effective 2026-10-02. By using HueCheck Palette Lab you agree to these terms.
The service
HueCheck Palette Lab is a tool provided by Zovo for use inside ChatGPT and other MCP clients. HueCheck Palette Lab is a WCAG color contrast checker and accessible color palette generator for designers, front-end developers and accessibility reviewers. It computes the exact WCAG 2.x contrast ratio for text and UI colours (hex, rgb, hsl, oklch, CSS names, and 8-digit hex with alpha), shows AA and AAA results for normal text, large text and UI components, suggests the nearest passing colours in OKLCH, tests every pair in a palette, and builds 50-950 tonal scales with CSS variables and a Tailwind config.
Acceptable use
Do not use the service for unlawful purposes, to infringe the rights of others, or to disrupt or overload the service.
No professional advice
Results are generated by deterministic calculations from the inputs you provide. They are informational and are not legal, tax, financial, or other professional advice. Check important results before relying on them.
Your content
You keep ownership of the content you enter. You grant us only the rights needed to process it and return the result.
Availability and warranty
The service is provided "as is" without warranties of any kind. We may change, suspend, or discontinue it at any time.
Liability
To the maximum extent permitted by law, Zovo is not liable for indirect or consequential damages arising from use of the service.