diff --git a/kitty/cocoa_window.m b/kitty/cocoa_window.m
index 9241e5f16..455713a09 100644
--- a/kitty/cocoa_window.m
+++ b/kitty/cocoa_window.m
@@ -195,11 +195,40 @@ macos_change_titlebar_color(PyObject *self UNUSED, PyObject *val) {
         titlebar_color = OPT(background);
     } else {
         if (!PyTuple_Check(val)) { PyErr_SetString(PyExc_TypeError, "Not a color tuple"); return NULL; }
+        change_titlebar_color = true;
         titlebar_color = color_as_int(val);
     }
     Py_RETURN_NONE;
 }
 
+void
+cocoa_set_titlebar_color(void *w)
+{
+    if (!change_titlebar_color) return;
+
+    NSWindow *window = (NSWindow *)w;
+
+    double red = ((titlebar_color >> 16) & 0xFF) / 255.0;
+    double green = ((titlebar_color >> 8) & 0xFF) / 255.0;
+    double blue = (titlebar_color & 0xFF) / 255.0;
+
+    NSColor *background =
+        [NSColor colorWithSRGBRed:red
+                            green:green
+                             blue:blue
+                            alpha:1.0];
+    [window setTitlebarAppearsTransparent:YES];
+    [window setBackgroundColor:background];
+
+    double luma = 0.2126 * red + 0.7152 * green + 0.0722 * blue;
+
+    if (luma < 0.5) {
+        [window setAppearance:[NSAppearance appearanceNamed:NSAppearanceNameVibrantDark]];
+    } else {
+        [window setAppearance:[NSAppearance appearanceNamed:NSAppearanceNameVibrantLight]];
+    }
+}
+
 static PyMethodDef module_methods[] = {
     {"cocoa_get_lang", (PyCFunction)cocoa_get_lang, METH_NOARGS, ""},
     {"cwd_of_process", (PyCFunction)cwd_of_process, METH_O, ""},
diff --git a/kitty/glfw.c b/kitty/glfw.c
index de3ccd53c..78a9fe232 100644
--- a/kitty/glfw.c
+++ b/kitty/glfw.c
@@ -9,6 +9,7 @@
 #include "glfw-wrapper.h"
 extern bool cocoa_make_window_resizable(void *w);
 extern void cocoa_create_global_menu(void);
+extern void cocoa_set_titlebar_color(void *w);
 
 #if GLFW_KEY_LAST >= MAX_KEY_COUNT
 #error "glfw has too many keys, you should increase MAX_KEY_COUNT"
@@ -383,6 +384,7 @@ create_os_window(PyObject UNUSED *self, PyObject *args) {
         if (glfwGetCocoaWindow) { if (!cocoa_make_window_resizable(glfwGetCocoaWindow(glfw_window))) { PyErr_Print(); } }
         else fprintf(stderr, "Failed to load glfwGetCocoaWindow\n");
     }
+    cocoa_set_titlebar_color(glfwGetCocoaWindow(glfw_window));
 #endif
     double now = monotonic();
     w->is_focused = true;