Color management problem

[vickim68445947]

So all of a sudden when I save jpegs as a copy, and I open them up in my system (not in Photoshop) The reds are extremely saturated in the jpeg. When I open the jpeg in PS, they are fine. I have several versions of PS, they all do the same thing. I swear I did not change any settings.  I deleted my prefs, did not help. Playing around with Windows and PS color management, I finally got it to the point that the jpeg and .psd files look the same. There is still some weirdness going on though. Now the jpeg thumbnails look desaturated compared to the .psd thumbnails. Before it was the other way around. I use pro photo as my working color profile. Also, whenever I open a .psd in PS, it tells me my profile is "p3" and do I want to change to the working profile, which is pro photo. I click yes. I have no idea what "p3" is or where it came from. I never got this message before. What is going on? Windows 10.

[D Fosse]

Sounds like you have a wide gamut monitor, and you are viewing the exported files in an application that does not support color management.

If that's the case, this is normal and expected behavior. Photoshop displays correctly, non-color managed applications oversaturated.

All this assuming that you have a valid monitor profile on your system (a valid monitor profile is one that describes the monitor's current and actual behavior accurately. Normally a calibrator is used to make that).

It's also important that you always embed the color profile. It won't matter if the application doesn't support color management in the first place - but even if it does, untagged images may be treated unpredictably. Always embed the profile.

[vickim68445947]

OK, but why did this just start happening? It was fine before with the same monitor.

[D Fosse]

You need to show screenshots. Make full-screen screenshots including the application interface, so that we can see which image viewer outside Photoshop you're referring to.

Include this in the Photoshop screenshot:

What make/model monitor? Make another screenshot of the Windows Color Management dialog, showing the default monitor profile:

[NB, colourmanagement]

@vickim68445947 "Also, whenever I open a .psd in PS, it tells me my profile is "p3" and do I want to change to the working profile, which is pro photo. I click yes. I have no idea what "p3" is or where it came from. I never got this message before. What is going on?"

What is the embedded icc profile in the PSD image you mention, I presume it's 'P3' (P3 is a colourspace now being adopted by handheld and display manufacturers. If it IS P3 then you'll need to work out how that icc profile got embedded. 

Did you change the 'non Photoshop Image viewer' that’s messing up your image appearance?

What program is that?

IF that image program worked right and read and used the image's embedded ICC profile along with the display profile it should very closely match Photoshop's appearance. Does it have colour management options?

You mention this happens with all versions of Photoshop, it would seem a fair conclustion, then, that nothing's happened to Photoshop - so what has changed? 

I hope this helps
neil barstow, colourmanagement net - adobe forum volunteer - co-author: 'getting colour right'
google me "neil barstow colourmanagement" for lots of free articles on colour management