How to set border color of certain Tkinter widgets?

Just use

widget.config(highlightbackground=COLOR)

Furthermore, if you don't want that border at all, set the highlightthickness attribute to 0 (zero).

python colors tkinter tcl border

You have to set the two highlights (with and without focus) to have a continuous color.

from tkinter import *root = Tk()e = Entry(highlightthickness=2)e.config(highlightbackground = "red", highlightcolor= "red")e.pack()root.mainloop()

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