How about a soft blue for your dining room?
Whyte Blue (HC 143) was chosen Benjamin
Moore's 2012 colour of the year. It is described
as "a beautiful, calming blue that has an element
of heritage and offers grounding rootedness,
providing comfort and stability".
Try the colours at home. Paint generous samples (about 18" square) of all candidates. Repeat the procedure on different walls in the space. Live with the painted squares for a few days. How do they look at different times of the day? How do they make you feel? How do they combine with your furniture, rugs, and adjacent rooms? Hopefully, there will be a clear winner among your samples!