Index: src/wp-admin/css/common.css
===================================================================
--- src/wp-admin/css/common.css	(revision 46350)
+++ src/wp-admin/css/common.css	(working copy)
@@ -272,7 +272,8 @@
 a:focus .media-icon img,
 .wp-person a:focus .gravatar {
 	color: #124964;
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
+	outline-offset: 2px;
 }
 
 .ie8 a:focus {
@@ -279,9 +280,10 @@
 	outline: #5b9dd9 solid 1px;
 }
 
-#adminmenu a:focus {
-	outline: 1px dotted #555d66;
-	outline-offset: -1px;
+#adminmenu a:focus,
+#wpadminbar a:focus {
+	outline: 2px solid #fff;
+	outline-offset: -2px;
 }
 
 .screen-reader-text:focus {
@@ -834,7 +836,7 @@
 }
 
 .tagchecklist .ntdelbutton:focus .remove-tag-icon:before {
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
 }
 
 .key-labels label {
@@ -1433,7 +1435,7 @@
 }
 
 .notice-dismiss:focus {
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
 }
 
 .ie8 .notice-dismiss:focus {
@@ -3066,7 +3068,9 @@
 }
 
 .js .postbox .handlediv:focus .toggle-indicator:before {
-	outline: 1px dotted #555d66;
+	box-shadow: 0 0 0 2px #007cba;
+	/* Only visible in Windows High Contrast mode */
+	outline: 2px solid transparent;
 }
 
 /* @todo: appears to be Press This only and overridden */
@@ -3160,7 +3164,7 @@
 }
 [role="treeitem"] .folder-label.focus {
 	color: #124964;
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
 }
 [role="treeitem"].hover,
 [role="treeitem"] .folder-label.hover {
@@ -3387,7 +3391,9 @@
 }
 
 .widget-top .widget-action:focus .toggle-indicator:before {
-	outline: 1px dotted #555d66;
+	box-shadow: 0 0 0 2px #007cba;
+	/* Only visible in Windows High Contrast mode */
+	outline: 2px solid transparent;
 }
 
 .control-section .accordion-section-title:after,
Index: src/wp-admin/css/customize-nav-menus.css
===================================================================
--- src/wp-admin/css/customize-nav-menus.css	(revision 46350)
+++ src/wp-admin/css/customize-nav-menus.css	(working copy)
@@ -868,9 +868,9 @@
 .menu-delete:focus,
 .menu-item-bar .item-delete:focus:before,
 #available-menu-items .item-add:focus:before {
-	box-shadow:
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, 0.8);
+	box-shadow: 0 0 0 2px #007cba;
+	/* Only visible in Windows High Contrast mode */
+	outline: 2px solid transparent;
 }
 
 
Index: src/wp-admin/css/login.css
===================================================================
--- src/wp-admin/css/login.css	(revision 46350)
+++ src/wp-admin/css/login.css	(working copy)
@@ -32,7 +32,8 @@
 
 a:focus {
 	color: #124964;
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
+	outline-offset: 2px;
 }
 
 p {
Index: src/wp-admin/css/site-health.css
===================================================================
--- src/wp-admin/css/site-health.css	(revision 46350)
+++ src/wp-admin/css/site-health.css	(working copy)
@@ -322,7 +322,7 @@
 	border: none;
 	box-shadow: none;
 	outline-offset: -2px;
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
 }
 
 .health-check-accordion-trigger .title {
Index: src/wp-admin/css/themes.css
===================================================================
--- src/wp-admin/css/themes.css	(revision 46350)
+++ src/wp-admin/css/themes.css	(working copy)
@@ -178,7 +178,7 @@
 }
 
 .theme-browser .theme:focus {
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
 }
 
 .theme-browser .theme:focus .more-details {
Index: src/wp-admin/css/widgets.css
===================================================================
--- src/wp-admin/css/widgets.css	(revision 46350)
+++ src/wp-admin/css/widgets.css	(working copy)
@@ -327,9 +327,9 @@
 }
 
 .sidebar-name .handlediv:focus .toggle-indicator:before {
-	box-shadow:
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, 0.8);
+	box-shadow: 0 0 0 2px #007cba;
+	/* Only visible in Windows High Contrast mode */
+	outline: 2px solid transparent;
 }
 
 .sidebar-name h2,
Index: src/wp-includes/css/buttons.css
===================================================================
--- src/wp-includes/css/buttons.css	(revision 46350)
+++ src/wp-includes/css/buttons.css	(working copy)
@@ -208,7 +208,8 @@
 
 .wp-core-ui .button-link:focus {
 	color: #124964;
-	outline: 1px dotted #555d66;
+	outline: 2px solid #007cba;
+	outline-offset: 2px;
 }
 
 .wp-core-ui .button-link-delete {