diff --git a/src/wp-includes/css/wp-embed-template.css b/src/wp-includes/css/wp-embed-template.css
index 6118ab4d2b6d1..9bf606589a773 100644
--- a/src/wp-includes/css/wp-embed-template.css
+++ b/src/wp-includes/css/wp-embed-template.css
@@ -217,7 +217,7 @@ p.wp-embed-heading {
 
 .wp-embed-share-dialog-open:focus .dashicons,
 .wp-embed-share-dialog-close:focus .dashicons {
-	box-shadow: 0 0 0 var(--wp-admin-border-width-focus, 1.5px) var(--wp-admin-theme-color, #3858e9);
+	box-shadow: 0 0 0 1.5px #3858e9;
 	/* Only visible in Windows High Contrast mode */
 	outline: 2px solid transparent;
 	border-radius: 100%;
diff --git a/src/wp-includes/embed.php b/src/wp-includes/embed.php
index 636f6acd94e6b..10558caed6f8c 100644
--- a/src/wp-includes/embed.php
+++ b/src/wp-includes/embed.php
@@ -1233,7 +1233,7 @@ function print_embed_sharing_dialog() {
  * @since 4.5.0
  */
 function the_embed_site_title(): void {
-	$fallback_icon_url = includes_url( 'images/w-logo-blue.png' );
+	$fallback_icon_url = includes_url( 'images/w-logo-gray-white-bg.svg' );
 	$site_icon_url     = get_site_icon_url( 32, $fallback_icon_url );
 
 	$icon_img = '';
diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index c297864859aa4..d7d2ff3fed89a 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -1752,7 +1752,7 @@ function do_favicon() {
 	 */
 	do_action( 'do_faviconico' );
 
-	wp_redirect( get_site_icon_url( 32, includes_url( 'images/w-logo-blue-white-bg.png' ) ) );
+	wp_redirect( get_site_icon_url( 32, includes_url( 'images/w-logo-gray-white-bg.png' ) ) );
 	exit;
 }
 
diff --git a/src/wp-includes/images/w-logo-gray-white-bg.png b/src/wp-includes/images/w-logo-gray-white-bg.png
new file mode 100644
index 0000000000000..0adbfad427550
Binary files /dev/null and b/src/wp-includes/images/w-logo-gray-white-bg.png differ
diff --git a/src/wp-includes/images/w-logo-gray-white-bg.svg b/src/wp-includes/images/w-logo-gray-white-bg.svg
new file mode 100644
index 0000000000000..6cb698ca9a607
--- /dev/null
+++ b/src/wp-includes/images/w-logo-gray-white-bg.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 64 64"><circle fill="#ffffff" cx="32" cy="32" r="32"/><path fill="#464442" d="M4.548 31.999c0 10.9 6.3 20.3 15.5 24.706L6.925 20.827C5.402 24.2 4.5 28 4.5 31.999z M50.531 30.614c0-3.394-1.219-5.742-2.264-7.57c-1.391-2.263-2.695-4.177-2.695-6.439c0-2.523 1.912-4.872 4.609-4.872 c0.121 0 0.2 0 0.4 0.022C45.653 7.3 39.1 4.5 32 4.548c-9.591 0-18.027 4.921-22.936 12.4 c0.645 0 1.3 0 1.8 0.033c2.871 0 7.316-0.349 7.316-0.349c1.479-0.086 1.7 2.1 0.2 2.3 c0 0-1.487 0.174-3.142 0.261l9.997 29.735l6.008-18.017l-4.276-11.718c-1.479-0.087-2.879-0.261-2.879-0.261 c-1.48-0.087-1.306-2.349 0.174-2.262c0 0 4.5 0.3 7.2 0.349c2.87 0 7.317-0.349 7.317-0.349 c1.479-0.086 1.7 2.1 0.2 2.262c0 0-1.489 0.174-3.142 0.261l9.92 29.508l2.739-9.148 C49.628 35.7 50.5 33 50.5 30.614z M32.481 34.4l-8.237 23.934c2.46 0.7 5.1 1.1 7.8 1.1 c3.197 0 6.262-0.552 9.116-1.556c-0.072-0.118-0.141-0.243-0.196-0.379L32.481 34.4z M56.088 18.8 c0.119 0.9 0.2 1.8 0.2 2.823c0 2.785-0.521 5.916-2.088 9.832l-8.385 24.242c8.161-4.758 13.65-13.6 13.65-23.728 C59.451 27.2 58.2 22.7 56.1 18.83z M32 0c-17.645 0-32 14.355-32 32C0 49.6 14.4 64 32 64s32-14.355 32-32.001 C64 14.4 49.6 0 32 0z M32 62.533c-16.835 0-30.533-13.698-30.533-30.534C1.467 15.2 15.2 1.5 32 1.5 s30.534 13.7 30.5 30.532C62.533 48.8 48.8 62.5 32 62.533z"/></svg>
\ No newline at end of file
diff --git a/tests/phpunit/tests/general/template.php b/tests/phpunit/tests/general/template.php
index 20f6d0012b3a7..00b683971a6a0 100644
--- a/tests/phpunit/tests/general/template.php
+++ b/tests/phpunit/tests/general/template.php
@@ -860,7 +860,7 @@ public function test_the_embed_site_title_uses_fallback_when_attachment_url_fail
 		add_filter( 'wp_get_attachment_image_src', '__return_false' );
 		$output = get_echo( 'the_embed_site_title' );
 
-		$fallback  = includes_url( 'images/w-logo-blue.png' );
+		$fallback  = includes_url( 'images/w-logo-gray-white-bg.svg' );
 		$processor = new WP_HTML_Tag_Processor( $output );
 
 		$this->assertTrue( $processor->next_tag( 'IMG' ), 'Expected IMG tag with fallback.' );
@@ -914,7 +914,7 @@ public function test_the_embed_site_title_omits_srcset_when_1x_and_2x_urls_are_i
 	 */
 	public function test_the_embed_site_title_uses_fallback_without_srcset_when_no_site_icon_set(): void {
 		$output   = get_echo( 'the_embed_site_title' );
-		$fallback = includes_url( 'images/w-logo-blue.png' );
+		$fallback = includes_url( 'images/w-logo-gray-white-bg.svg' );
 
 		$processor = new WP_HTML_Tag_Processor( $output );