Try #12955:

components/support/ktx/build.gradle

@@ -52,6 +52,12 @@ dependencies {
     testImplementation Dependencies.testing_coroutines
     testImplementation Dependencies.testing_robolectric
     testImplementation Dependencies.testing_mockito
+
+    androidTestImplementation project(':support-android-test')
+    androidTestImplementation Dependencies.androidx_test_core
+    androidTestImplementation Dependencies.androidx_test_runner
+    androidTestImplementation Dependencies.androidx_test_rules
+    androidTestImplementation Dependencies.androidx_test_junit
 }
 
 apply from: '../../../publish.gradle'

components/support/ktx/src/androidTest/AndroidManifest.xml

@@ -0,0 +1,13 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="mozilla.components.support.ktx">
+
+    <application>
+        <activity
+            android:name=".TestActivity"
+            android:exported="false" />
+    </application>
+
+</manifest>

components/support/ktx/src/androidTest/java/mozilla/components/support/ktx/TestActivity.kt

@@ -0,0 +1,12 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.support.ktx
+
+import android.app.Activity
+
+/**
+ * Empty activity only to be used in UI tests.
+ */
+internal class TestActivity : Activity()

components/support/ktx/src/androidTest/java/mozilla/components/support/ktx/android/view/WindowKtTest.kt

@@ -0,0 +1,54 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.support.ktx.android.view
+
+import android.graphics.Color
+import androidx.test.ext.junit.rules.ActivityScenarioRule
+import mozilla.components.support.ktx.TestActivity
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Rule
+import org.junit.Test
+
+class WindowKtTest {
+    @get:Rule
+    internal val activityRule: ActivityScenarioRule<TestActivity> = ActivityScenarioRule(TestActivity::class.java)
+
+    @Test
+    fun whenALightColorIsAppliedToStatusBarThenSetIsAppearanceLightStatusBarsToTrue() {
+        activityRule.scenario.onActivity {
+            it.window.setStatusBarTheme(Color.WHITE)
+
+            assertTrue(it.window.getWindowInsetsController().isAppearanceLightStatusBars)
+        }
+    }
+
+    @Test
+    fun whenADarkColorIsAppliedToStatusBarThenSetIsAppearanceLightStatusBarsToFalse() {
+        activityRule.scenario.onActivity {
+            it.window.setStatusBarTheme(Color.BLACK)
+
+            assertFalse(it.window.getWindowInsetsController().isAppearanceLightStatusBars)
+        }
+    }
+
+    @Test
+    fun whenALightColorIsAppliedToNavigationBarThemeThenSetIsAppearanceLightNavigationBarsToTrue() {
+        activityRule.scenario.onActivity {
+            it.window.setNavigationBarTheme(Color.WHITE)
+
+            assertTrue(it.window.getWindowInsetsController().isAppearanceLightNavigationBars)
+        }
+    }
+
+    @Test
+    fun whenADarkColorIsAppliedToNavigationBarThemeThenSetIsAppearanceLightNavigationBarsToFalse() {
+        activityRule.scenario.onActivity {
+            it.window.setNavigationBarTheme(Color.BLACK)
+
+            assertFalse(it.window.getWindowInsetsController().isAppearanceLightNavigationBars)
+        }
+    }
+}

components/support/ktx/src/main/java/mozilla/components/support/ktx/android/view/Window.kt

@@ -15,24 +15,24 @@ import mozilla.components.support.utils.ColorUtils.isDark
  * Colors the status bar.
  * If the color is light enough, a light status bar with dark icons will be used.
  */
-fun Window.setStatusBarTheme(@ColorInt color: Int) {
+fun Window.setStatusBarTheme(@ColorInt toolbarColor: Int) {
     getWindowInsetsController().isAppearanceLightStatusBars =
-        isDark(color)
-    statusBarColor = color
+        !isDark(toolbarColor)
+    statusBarColor = toolbarColor
 }
 
 /**
  * Colors the navigation bar.
  * If the color is light enough, a light navigation bar with dark icons will be used.
  */
-fun Window.setNavigationBarTheme(@ColorInt color: Int) {
+fun Window.setNavigationBarTheme(@ColorInt toolbarColor: Int) {
     getWindowInsetsController().isAppearanceLightNavigationBars =
-        isDark(color)
+        !isDark(toolbarColor)
 
     if (SDK_INT >= Build.VERSION_CODES.P) {
         navigationBarDividerColor = 0
     }
-    navigationBarColor = color
+    navigationBarColor = toolbarColor
 }
 
 /**

docs/changelog.md

@@ -13,6 +13,9 @@ permalink: /changelog/
 * **feature-qr**
   * QRFeature now allows querying if scanning is in progress with a new `isScanInProgress` property. This helps deciding on whether to resume scanning by calling `scan` in a new `QRFeature` instance as it can happen if the process is restarted as a followup to the user updating system permissions for the app.
 
+* **support-ktx**:
+  * The colors of the icons from the status bar should be in contrast with the status bar background color [#1795650](https://bugzilla.mozilla.org/show_bug.cgi?id=1795650)
+
 # 107.0.0
 * [Commits](https://github.com/mozilla-mobile/android-components/compare/v106.0.0..v107.0.0)
 * [Milestone](https://github.com/mozilla-mobile/android-components/milestone/154?closed=1)