Color calibration issue on High Sierra

Same on my iMac (27-inch, Late 2012).
Switching off 'Automatically adjust brightness' in the Displays System Settings did the trick for me.
The transition between the two states is subtle so close your eyes and wait a second or two.

tarabarsky wrote:

Just upgraded to High Sierra, and now my iMac screen lost the tone, brightness and colors I used to. The colors are pale, the tone is cold, the white is blue-ish... It looks disgusting.

I can see that the default profile for the display was overwritten during the installation: it says now iMac-2838C3DD-A394-78C1-4A5E-57649BBC5643.icc with the today's date.

I suspect that I should be able to get back to what I have if I am able to get my previous display profile somehow (which was a factory default, actually). Can I get somewhere the factory default display profile for iMac 21.5-inch, Late 2013?

Or is there a way to restore my MacOS Sierra installation?

Yes you can restore back to Sierra however only if you have a backup of it. How you would do that is by using your bootable clone to restore or you can use Time Machine to restore. If you have a SSD installed as your primary drive in your computer then all bets are off as the file format is different on HS than it was on all different versions of Mac OS.

Comments like yours ALWAYS come up when a new release comes out. My advice is be patient and wait for some updates, there is a chance what you are seeing is your perception even possibly imagined.

Have you got a friend that could perhaps email the profile file to you so you can drop it in the Profiles folder in the ColorSync folder (in the library)? It's only 3kb.

Or you could try calibrating it yourself with the calibration option in settings to get it back to how you like it?

katoushka wrote:

It is however it’s been utterly simplified - the only thing you can adjust is the white point.

Hold down the Option key when you press the

"Calibrate..." button. The dialog box then gives you

a check box to enable "Expert Mode". This returns

the full calibrator function.

Fantastic advice, thank you. I will try to mark as helpful but doubt it will work as not my post.

Great that Apple trying to simplify stuff but when the need arises it would be real handy if they'd advertise these in-depth capabilities!

Nope, didn't work.... Tarabarsky, please drop a star or tick!

Well, I just tried turning off “Automatically adjust brightness” and then recalibrating. Everything seemed to be working until I tried to save the new calibration setting—I get an error, and then it reverts back to that annoying blue.

So now what to do, I wonder…?

Same problem here, but it went in gradations.

First the colors were just very strange and very bright, but the Brightness-buttons didn't work.

Now, after couple of days and after a shut doxn of the iMac, the colors are completely changed and although the brightness-buttons work again, there is no way to work on the iMac; the contrast is very bad, text is not visible, etc.

The strangest thing is that the window Where i have to give my pw is completely Ok...

Any luck resolving this? This is quite the disaster, and the automatic brightness not the solution. Anyone at Apple working on this?

The great calibration app. there once was is gone.

There's still a Display Calibrator Assistant available.... is that not good enough?

It is however it’s been utterly simplified - the only thing you can adjust is the white point.

I have been struggling with the same issue for the past ten days. Contrast is bad/text not visible, yet PW screen looks fine. I've yet to find a solution.

MacBook Air 10.13.1 same problem.. TINTED BLUE