Can I use
?

theme-color Meta Tag

- LS

Meta tag to define a suggested color that browsers should use to customize the display of the page or of the surrounding user interface. The meta tag overrides any theme-color set in the web app manifest.

Chrome

  1. ❌ 4 - 38: Not supported
  2. ❌ 39 - 72: Not supported
  3. ◐ 73 - 146: Partial support
  4. ◐ 147: Partial support
  5. ◐ 148 - 150: Partial support

Edge

  1. ❌ 12 - 145: Not supported
  2. ❌ 146: Not supported

Safari

  1. ❌ 3.1 - 14.1: Not supported
  2. ✅ 15 - 18.7: Supported
  3. ◐ 26.0 - 26.3: Partial support
  4. ◐ 26.4: Partial support
  5. ◐ 26.5 - TP: Partial support

Firefox

  1. ❌ 2 - 148: Not supported
  2. ❌ 149: Not supported
  3. ❌ 150 - 152: Not supported

Opera

  1. ❌ 9 - 126: Not supported
  2. ❌ 127: Not supported

IE

  1. ❌ 5.5 - 10: Not supported
  2. ❌ 11: Not supported

Chrome for Android

  1. ◐ 147: Partial support

Safari on iOS

  1. ❌ 3.2 - 14.8: Not supported
  2. ✅ 15 - 18.7: Supported
  3. ❌ 26.0 - 26.3: Not supported
  4. ❌ 26.4: Not supported
  5. ❌ 26.5: Not supported

Samsung Internet

  1. ❌ 4: Not supported
  2. ﹖ 5: Support unknown
  3. ✅ 6.2 - 28: Supported
  4. ✅ 29: Supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ❌ 10 - 12.1: Not supported
  2. ❌ 80: Not supported

UC Browser for Android

  1. ❌ 15.5: Not supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ❌ 147: Not supported

Firefox for Android

  1. ❌ 149: Not supported

QQ Browser

  1. ❌ 14.9: Not supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ❌ 2.5: Not supported
  2. ❌ 3: Not supported

Vivaldi browser (Chromium based) supports this feature in both mobile and desktop version. Also supported in the (now discontinued) Firefox OS.

Resources:
Firefox for Android implementation bug
Google Developers article