Insert color in tkinter automatically

[Dwimmerlaik]

Hi,

I've been trying to insert a hexadecimal number in an image made in tkinter, but I just can't seem to get it right. The idea is that a random sized square appears, then the user is asked which color the square should be via a button and finally the color should be inserted. This is what I have thus far:

from tkinter import *
import random
tk = Tk()
canvas = Canvas(tk, width=400,height=400)
canvas.pack()

def random_sqaure(width, height, fill_color):
    x1 = random.randrange(width)
    y1 = random.randrange(height)
    x2 = random.randrange(x1 + random.randrange(width))
    y2 = random.randrange(y1 + random.randrange(height))
    canvas.create_rectangle(x1, y1, x2, y2, fill=fill_color)


from tkinter.colorchooser import *
def getColor():
    color = askcolor() 
    print (color)
Button(text = 'Choose color', command=getColor).pack()

c = getColor()
random_square(400, 400, c)

Can somebody help fix this or am I going about this the wrong way?