Re: woman with grandson, cc welcome
Okay maybe not as easy as I thought. The cell phone is getting better but not super accurate. If you were to include a Color Checker in a second image taken at the same settings, then the white balance and [profile] could be applied to your image rendering more accurate colour.
Here are 2 sample color checkers. the more faded is what the camera saw. The more intense is after I profiled.
Without the accuracy of the profiles I can only guess.
I suspect your paper is White and not Buff. What I don't know is whether you applied a warm wash over the whole painting.
If your paper is white and you saved your whites when painting, then you may have added a little blue to one of the blankets. If so then I have taken the liberty of adjusting your second capture. Hope you don't mind.
Adamphotoman AKA Grant “There is nothing worse than a sharp image of a fuzzy concept.” ― Ansel Adams
Any Camera any Lens