fix(ui): badge + breadcrumbs color contrast

[malav2110]

Description

This PR addresses color contrast accessibility issues on Previous Releases Page.

Validation

Axe Report:

Before:

After:

Related Issues

Fixes #8464

Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run pnpm format to ensure the code follows the style guide.
• I have run pnpm test to check if all tests are passing.
• I have run pnpm build to check if the website builds without errors.
• I've covered new added functionality with unit tests if necessary.

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Project	Deployment	Review	Updated (UTC)
nodejs-org	Ready	Preview	Dec 30, 2025 10:58pm

[github-actions]

👋 Codeowner Review Request

The following codeowners have been identified for the changed files:

Team reviewers: @nodejs/nodejs-website

Please review the changes when you have a chance. Thank you! 🙏

[Copilot]

Pull request overview

This PR improves accessibility by addressing color contrast issues on the Previous Releases page. The changes darken background colors for specific UI components to meet WCAG accessibility standards when paired with white text.

• Updated breadcrumb active link background from green-600 to green-800
• Updated neutral badge background from neutral-600 to neutral-800

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/ui-components/src/Common/Breadcrumbs/BreadcrumbLink/index.module.css	Changes active breadcrumb link background color from green-600 to green-800 to improve contrast with white text
packages/ui-components/src/Common/Badge/index.module.css	Changes neutral badge background color from neutral-600 to neutral-800 to improve contrast with white text

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.29%. Comparing base (011eda1) to head (124d855).
⚠️ Report is 27 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8494      +/-   ##
==========================================
+ Coverage   73.70%   74.29%   +0.59%     
==========================================
  Files         108      106       -2     
  Lines        9210     9112      -98     
  Branches      313      307       -6     
==========================================
- Hits         6788     6770      -18     
+ Misses       2420     2340      -80     
  Partials        2        2              

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