[Tkinter-discuss] Tkinter colours lighter on OS X

Patrick Robertson robertson.patrick at gmail.com
Wed Jan 28 08:20:12 CET 2015

I’m having a problem whereby every colour I declare in Tkinter (background colour, font colour etc.) is always a shade lighter when viewed on OS X.

Take for example the test code:

import Tkinter

root = Tkinter.Tk()
root.geometry('%dx%d+%d+%d' % (200, 200, 200, 200))

frame = Tkinter.Frame(root, bg="#444444", borderwidth=20)

frame2 = Tkinter.Frame(frame, bg="#999999", height=120)

If you run this on OS X and then open up DigitalColor Meter and hover over each box, you will see that the two lighter grey colours don't match what is in the code.
If I hover over the the inner square, I get #A9A9A9 (instead of #999999), and the middle square gives #565656 (instead of #444444).
I also get the same thing for .gifs I load using Tkinter.PhotoImage(data=…). For images I have tried changing the sRGB/RGB setting of the image to no avail

I'm running OS X 10.9 with Python 2.7.8, Tc/Tk 8.5 (Tkinter specifies __version__ = '$Revision: 81008 $')
Has anybody else experienced this problem, and if so what is the right fix? Thanks

You can see the full question on SO: https://stackoverflow.com/questions/28166029/tkinter-colours-lighter-on-os-x
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