This is just the most marvelous thread. I use MUFE Mat Velvet + in No. 15 Alabaster. In the summer, this can be just a hair too light, even for me, but the next shade (20) is too dark. The rest of the year, however, this is the perfect color for me. The coverage is wonderful, as you can build it up a bit or put it on fairly sheer. And I have found that if my skin is behaving reasonably well, I can use it as concealor on minor imprefections.
Lately, my skin has been a tiny bit dry, so some days I have added a tiny bit of Tarte Smooth Operator in Facade to it (probably about 1 part SO to about 3 parts MV+). While SO is not quite as pale as MV, it is sheer enough that adding a little bit of it doesn't make the overall product too dark for me, but makes it work better if I am having a slightly dry day.
I am curious though if anyone here has recs for good concealor in this color range? I used to be able to blend in a little bit of MAC Studio Finish in NC 15, but it just looks wrong/too dark these days...