Tkinter Themes

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Tkinter Themes


Summary: in this tutorial, you’ll learn how to change the Tkinter theme from one to another.

Introduction to Tkinter ttk themes

In Tkinter, a theme determines the “look & feel” of all the widgets. It’s a collection of styles for all the ttk widgets.

A style specifies the appearance of a widget class e.g., a Button. Each theme comes with a set of styles. It’s possible to change the appearance of widgets by:

  • Modifying the built-in styles
  • or creatting new styles

Tkinter allows you to change the current theme to another. When you change the current theme to a new one, Tkinter will apply the styles of that theme to all the ttk widgets.

To get the available themes, you use the theme_names() method of the ttk.Style instance.

First, create a new instance of the ttk.Style class:

style = ttk.Style(root)

Code language: Python (python)

Second, get the available themes by calling the theme_names() method:


Code language: Python (python)

To get the current theme, you use the theme_use() method:

current_theme = style.theme_use()

Code language: Python (python)

Note that every operating system (OS) such as Windows, macOS, and Linux comes with its own predefined themes. If you use the theme_names() and theme_use() methods on different OS, you’ll get different results.

To change the current theme to a new one, you pass the new theme name to the theme_use() method:


Code language: Python (python)

The following program shows all themes in your system and allows you to change one theme to another:

import tkinter as tk
from tkinter import ttk

class App(tk.Tk):
def __init__(self):

# root window
self.title('Theme Demo')
self.geometry('400x300') = ttk.Style(self)

# label
label = ttk.Label(self, text='Name:')
label.grid(column=0, row=0, padx=10, pady=10, sticky='w')
# entry
textbox = ttk.Entry(self)
textbox.grid(column=1, row=0, padx=10, pady=10, sticky='w')
# button
btn = ttk.Button(self, text='Show')
btn.grid(column=2, row=0, padx=10, pady=10, sticky='w')

# radio button
self.selected_theme = tk.StringVar()
theme_frame = ttk.LabelFrame(self, text='Themes')
theme_frame.grid(padx=10, pady=10, ipadx=20, ipady=20, sticky='w')

for theme_name in
rb = ttk.Radiobutton(
rb.pack(expand=True, fill='both')

def change_theme(self):

if __name__ == "__main__":
app = App()

Code language: Python (python)

In this example, when you select a theme from the radio button list, the change_theme() method will apply the selected theme.

If you run the program on Windows 10, you’ll see the following window:

Tkinter Theme

If you change the theme to classic, you’ll see the style of the widgets (Label, Entry, Button, LabelFrame, and Radio Button) change to the following:

ttk Theme


  • Create an instance of the ttk.Style class to access the style database.
  • Use the style.theme_names() method to get available themes from the Operating System on which the Tkinter application is running.
  • Use the style.theme_use() method to change the current theme to a new one.

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