I used blue at our house on a few walls, took that blue (egg shell) and added some bright white ( semi gloss) to make it lighter. I had to mix some more to repaint the new dry wall and it actually matched, to my surprise. Well after a few adds of white to the blue, a bit of paint smear on the wall, let it dry, after two tries it matched.
It is so damp here, we have a window unit running full time at 64 to pull dampness out of the house, one of the doors has quit closing. Always something, but today it almost closed.
5 inches of rain here at our house, even more in Baltimore. And the neighbors gutter is overflowing filling our basement stairs, a bit of leakage under the door. We talked to the renters, they called the owner, he will be fixing it.