Can I use
?

prefers-color-scheme media query

- WD

Media query to detect if the user has set their system to use a light or dark color theme.

Chrome

  1. ❌ 4 - 75: Not supported
  2. ✅ 76 - 137: Supported
  3. ✅ 138: Supported
  4. ✅ 139 - 141: Supported

Edge

  1. ❌ 12 - 18: Not supported
  2. ✅ 79 - 137: Supported
  3. ✅ 138: Supported

Safari

  1. ❌ 3.1 - 12: Not supported
  2. ✅ 12.1 - 18.4: Supported
  3. ✅ 18.5: Supported
  4. ✅ 26.0 - TP: Supported

Firefox

  1. ❌ 2 - 66: Not supported
  2. ✅ 67 - 139: Supported
  3. ✅ 140: Supported
  4. ✅ 141 - 143: Supported

Opera

  1. ❌ 9 - 60: Not supported
  2. ✅ 62 - 116: Supported
  3. ✅ 117: Supported

IE

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

Chrome for Android

  1. ✅ 138: Supported

Safari on iOS

  1. ❌ 3.2 - 12.5: Not supported
  2. ✅ 13 - 18.4: Supported
  3. ✅ 18.5: Supported
  4. ✅ 26.0: Supported

Samsung Internet

  1. ❌ 4 - 11.2: Not supported
  2. ✅ 12.0 - 27: Supported
  3. ✅ 28: Supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

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

UC Browser for Android

  1. ✅ 15.5: Supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ✅ 138: Supported

Firefox for Android

  1. ✅ 140: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

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

Support will also depend on whether or not the OS has support for a light/dark theme preference.

Resources:
Chromium implementation issue
Firefox implementation bug
MDN article
Web.dev article