Can I use rgb in tkinter?

Question

Can I use rbg instead of hex in tkinter? If so, how can I do it? I am planning to use this feature to make sort of a gradient from one color to another and I plan to make a for loop to change it from 1 to 255 in a few seconds.

from tkinter import *

root = Tk()
root.configure(background="can i use rgb instead of hex here?")
root.mainloop()

Answer 1

No, tkinter does not support RGB, but you can write a small helper function to remedy this:

Maybe something like this, where the argument rgb must be a valid rgb code represented as a tuple of integers.

import tkinter as tk


def _from_rgb(rgb):
    """translates an rgb tuple of int to a tkinter friendly color code
    """
    return "#%02x%02x%02x" % rgb   

root = tk.Tk()
root.configure(bg=_from_rgb((0, 10, 255))) 
root.mainloop()

If you find it more readable, you can also use fstrings to achieve the exact same result:

def _from_rgb(rgb):
    """translates an rgb tuple of int to a tkinter friendly color code
    """
    r, g, b = rgb
    return f'#{r:02x}{g:02x}{b:02x}'

Note that the colorsys module from the Python standard library can help translate from HSV, HLS, and YIQ color systems

Answer 2

def rgbtohex(r,g,b):
    return f'#{r:02x}{g:02x}{b:02x}'

print(rgbtohex(r=255, g=255, b=255))

Hope this helps some of you