Docs for high contrast mode in Kibana

cloud-account/high-contrast.md

@@ -0,0 +1,26 @@
+---
+description: Use high-contrast mode in Kibana.
+applies_to:
+  stack: beta 9.1
+  serverless: unavailable
+  deployment:
+    self: beta 9.1
+    ess: unavailable
+products:
+  - id: kibana
+---
+
+# Use high-contrast mode in Kibana
+
+You can change the interface contrast mode of Kibana to improve visibility and readability in low-light conditions.
+
+1. Open the user menu from the header.
+2. Select **Appearance**.
+3. Choose an interface contrast mode:
+
+    - **System**: Synchronizes Kibana's color mode with your system settings
+    - **Normal**: The default color mode of Kibana
+    - **High**: The high-contrast color mode of Kibana
+
+4. Select **Save changes**.
+5. Refresh the page to apply the selected color mode.

cloud-account/toc.yml

@@ -6,4 +6,5 @@ toc:
   - file: change-your-password.md
   - file: add-a-login-method.md
   - file: multifactor-authentication.md
-  - file: dark-mode.md
+  - file: dark-mode.md
+  - file: high-contrast.md