diff --git a/extension.json b/extension.json
index aa8da5d3..b992d1a3 100644
--- a/extension.json
+++ b/extension.json
@@ -15,11 +15,6 @@
 		"MediaWiki": ">= 1.38.0"
 	},
 	"config": {
-		"CodeMirrorColorblindColors": {
-			"value": false,
-			"description": "Temporary feature flag for colorblind-friendly colors.",
-			"public": true
-		},
 		"CodeMirrorLineNumberingNamespaces": {
 			"value": null,
 			"description": "List of namespace IDs where line numbering should be enabled, or `null` to enable for all namespaces. Set to [] to disable everywhere. Defaults to `null` for all namespaces.",
diff --git a/includes/Hooks.php b/includes/Hooks.php
index e4920b2a..f2bc6bcf 100644
--- a/includes/Hooks.php
+++ b/includes/Hooks.php
@@ -64,8 +64,6 @@ class Hooks {
 		/** @var Config $config */
 		$config = MediaWikiServices::getInstance()->getMainConfig();
 
-		$vars['wgCodeMirrorColorblindColors'] = $config->get( 'CodeMirrorColorblindColors' );
-
 		$vars['wgCodeMirrorLineNumberingNamespaces'] = $config->get( 'CodeMirrorLineNumberingNamespaces' );
 	}
 
@@ -84,15 +82,12 @@ class Hooks {
 			'type' => 'api',
 		];
 
-		$config = MediaWikiServices::getInstance()->getMainConfig();
-		if ( $config->get( 'CodeMirrorColorblindColors' ) ) {
-			$defaultPreferences['usecodemirror-colorblind'] = [
-				'type' => 'toggle',
-				'label-message' => 'codemirror-prefs-colorblind',
-				'help-message' => 'codemirror-prefs-colorblind-help',
-				'section' => 'editing/accessibility',
-			];
-		}
+		$defaultPreferences['usecodemirror-colorblind'] = [
+			'type' => 'toggle',
+			'label-message' => 'codemirror-prefs-colorblind',
+			'help-message' => 'codemirror-prefs-colorblind-help',
+			'section' => 'editing/accessibility',
+		];
 	}
 
 }
diff --git a/resources/ext.CodeMirror.js b/resources/ext.CodeMirror.js
index e3635d5c..7d156655 100644
--- a/resources/ext.CodeMirror.js
+++ b/resources/ext.CodeMirror.js
@@ -248,7 +248,7 @@
 				// T194102: UniversalLanguageSelector integration is buggy, disabling it completely
 				.addClass( 'noime' );
 
-			if ( mw.config.get( 'wgCodeMirrorColorblindColors' ) && mw.user.options.get( 'usecodemirror-colorblind' ) ) {
+			if ( mw.user.options.get( 'usecodemirror-colorblind' ) ) {
 				$codeMirror.addClass( 'cm-mw-colorblind-colors' );
 			}
 
diff --git a/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js b/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
index c031d591..ebd3b3dd 100644
--- a/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
+++ b/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
@@ -119,7 +119,7 @@ ve.ui.CodeMirrorAction.prototype.toggle = function ( enable ) {
 				// so revert any editfont user preference
 				surfaceView.$element.removeClass( 'mw-editfont-sans-serif mw-editfont-serif' ).addClass( 'mw-editfont-monospace' );
 
-				if ( mw.config.get( 'wgCodeMirrorColorblindColors' ) && mw.user.options.get( 'usecodemirror-colorblind' ) ) {
+				if ( mw.user.options.get( 'usecodemirror-colorblind' ) ) {
 					surfaceView.$element.addClass( 'cm-mw-colorblind-colors' );
 				}