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.

IE

  1. 5.5 - 10
  2. 11

Edge

  1. 12 - 81
  2. 83

Firefox

  1. 2 - 77
  2. 78
  3. 79 - 80

Chrome

  1. 4 - 38
  2. 39 - 72
  3. 73 - 81
  4. 83
  5. 84 - 86

Safari

  1. 3.1 - 13
  2. 13.1
  3. 14 - TP

Opera

  1. 9 - 68
  2. 69

iOS Safari

  1. 3.2 - 13.3
  2. 13.4
  3. 14.0

Opera Mini

  1. all

Android Browser

  1. 2.1 - 4.4.4
  2. 81

Blackberry Browser

  1. 7
  2. 10

Opera Mobile

  1. 10 - 12.1
  2. 46

Chrome for Android

  1. 81

Firefox for Android

  1. 68

IE Mobile

  1. 10
  2. 11

UC Browser for Android

  1. 12.12

Samsung Internet

  1. 4
  2. 5
  3. 6.2 - 11.2
  4. 12.0

QQ Browser

  1. 10.4

Baidu Browser

  1. 7.12

KaiOS Browser

  1. 2.5

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