a11y: Not enough color contrast in display of input/output schema

Q&A (please complete the following information)

• OS: [e.g. macOS] Windows 10
• Browser: [e.g. chrome, safari] Chrome
• Version: [e.g. 22] 121
• Method of installation: [e.g. npm, dist assets] npm
• Swagger-UI version: [e.g. 3.10.0] Swagger UI React 5.11.3
• Swagger/OpenAPI version: [e.g. Swagger 2.0, OpenAPI 3.0] OpenAPI 3.0

Content & configuration

Basic/ default

Describe the bug you're encountering

We are using a tool called Sort Site to evaluate our site for 508 accessibility compliance. It is flagging there is not enough color contrast in the display of the input schema: "Ensure that text and background colors have a 7:1 contrast ratio."
Violates WCAG 2.0 AAA 1.4.6 https://www.w3.org/WAI/WCAG21/Understanding/contrast-enhanced.html
This is occurring on the

• "td" (contained within the "tr class=property-row required")
• "span class=prop-type"
• "span class=prop-format"
• "span class=property primitive"
• "p" contained within the div with class "renderedMarkdown"

To reproduce...

Open a POST method, Expand Schemas, expand an input schema, then example data elements.

Expected behavior

enough color contrast.

Screenshots

Here's the screenshot of the display

Here are the errors from Sort Site and the html context:

Additional context or thoughts

I would think the red asterisk marking "required" does not have enough color contrast either, because that element did not have enough contrast elsewhere.

Reproduce the issue through POST → Expand Schemas → an input schema → example data elements, then inspect the listed td, prop-type, prop-format, property primitive, renderedMarkdown, and required-marker elements. Check their foreground and background colors against the WCAG 7:1 target; done means the flagged schema text and required marker meet the required contrast.