Classic Gray’s undertone is a brown. It probably is the natural light which is interfering with the color…from what direction does the natural light come?

If it from the North, that could be what is making the gray look blue.

Thank you! The light is from the east, so the room does not get a lot of natural light later in the day, and there are also evergreens out the window.

Dunn Edwards "Faded Gray"

Look at BM Balboa Mist. I have it in a south-west facing room and it looks good (to me) in daylight and at night.