Let's find out! This program creates a series of rectangles, with the color going from black to nearly white. White corresponds to higher x and y coordinate values. So the answer to your question can be seen in the output of the program.
import Tkinter
c = Tkinter.Canvas(width=220, height=220)
c.pack()
for i in range(0, 200, 20):
lum = i * 255 / 200
color = "#%02x%02x%02x" % (lum, lum, lum)
c.create_rectangle( i, i, i+40, i+40, fill=color)
c.mainloop()
pgpSbn6OJyaNx.pgp
Description: PGP signature
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