sRGB or Adobe RGB

If you are conffused, this may help.

See: http://digitaldog.net/files/PhotoshopColorSettings.mp4
Photoshop CC Color Settings and Assign/Convert to Profile video

It’s hard to say what a more “accurate” representation would be, since a Midjourney image is completely synthesized, right? It might be safe to assume Midjourney images are sRGB, just because that’s the most common default. In a case like there where a file has no embedded color profile and there is no real-world reference, then the only thing you have to go on is, which color space does it look best in when you use Assign Profile?

More saturation does not necessarily mean better. More saturation can be worse if it’s beyond what it would be in the real world, because then it’s inaccurate.

In Photoshop I modified the artwork and changed it to Adobe RGB color space. Does this work or can't I change an sRGb into Adobe RGB?

By @WaMo

All of this depends on how and why. For example, Photoshop lets you change color spaces using Assign Profile or Convert to Profile. Did you “change it to Adobe RGB color space” using Assign Profile, Convert to Profile, or another method?

Assign Profile is the right thing to do when the image is untagged, or when you think the original is currently being viewed in the wrong color space. Convert to Profile is the right thing to do when you need to switch an image’s color space, and want the current color appearance to be preserved as consistently as possible.

The image looks much more saturated but if I would print it would the sRGB still be the more accurate representation or will it print like the more saturated Adobe RGB.

By @WaMo

If you set up the print job correctly, the colors will print to the best of the ability of a specific combination of printer, ink, and paper. But for many reasons, printers cannot reproduce the same color range as sRGB or the larger Adobe RGB. So chances are it will not look the same when printed, although it might look fine. The more saturated it is, the higher the chance a print cannot match those colors.

On a cheap printer with plain paper, the colors will probably be much less saturated than on the screen.

As you upgrade the printer, its ink or toner, and the type of paper you use in it, the possible range of colors and tones it can reproduce goes up.

The most colors might be available in a professional color printer using a very high grade of paper, and where the printing color profile and other options are set properly.

None of those will be able to reproduce all of Adobe RGB, but they might reproduce much of sRGB.

If you need a different color profile, you go to Edit > Convert to Profile. That remaps the numbers into the new color space, preserving visual appearance.

Don't use Edit > Assign Profile! That leaves the numbers, but changes the meaning of those numbers. Hence, the visual appearance will change.

Assign Profile should only be used when an image doesn't have a profile at all (untagged). An image should always, no exception, have an embedded profile. If it doesn't, the numbers are undefined.

You can also use Assign Profile if you know the image has the wrong profile embedded. Like here.