Katie - what a beautiful home! Exterior colors can be the hardest thing to pick but the first trick is to always be outside when picking them out as what looks beautiful inside can be too intense once applied. Going lighter than you think, and adding some earthy undertones is key. What can seem dull on a small paint swatch can be exciting on a large outside wall. Do you have a designer already or can your builder recommend one just to help you quickly with this color process?
Remember too when your home is done you'll be able to have more details (railings, landscaping etc.) going on as well so the color will be less in your face!:) Good luck and congratulations!

Thank you for the response! I am the sole designer on this project. I have relied extensively on this website for ideas. I am reaching out on this discussion site in hopes that someone with way more experience could help me at this critical stage. I was considering swapping the blue with a more subtle sage green and keeping the remaining colors intact. Any help would be awesome!!!

Take a peek at these - Benjamin Moore 458 Sage Tint (light blue green), BM709 Heavenly Blue, BM1570 Gray Wisp. Any of these have that earthy undertone I mentioned but stay in your color pallet

And BM HC146 Wedgewood Gray

Hi, I'm no expert. You have got to live with it, do your interior colours lead toward a particular colour pallet ? Perhaps go to a good paint shop and see if they can put your new colour selection on the house in the computer so you can see how it will look. I'd go sage green, but I'm a green girl

Check out these colors

Thanks for all the input I am considering all of them! I forgot to mention we are using Sherwin Williams paint for this home.

Hi Katie...I would like to suggest BM Carolina Gull, I know your using SW but they can match any color you
choose from any source. The other suggestion would to bring the white down with shutters on the first floor windows.

Thank you:) also considering benjamin arctic gray, any thoughts on this? Would I keep same color I have on upper level and white on trim? What color for shutters that are not on yet?

http://houzz.com/photos/460551
Nice color combination

Another
http://houzz.com/photos/235539

Hi Katie......Artic Gray would be beautiful, what color is on the upper floor???