Black, to match your shutters I think. You have lovely landscaping and I would be concerned about the red distracting from that. You could also do a black and buff combination (buff with black trim on it for example) as buff matches your roof.

Red is traditional but you could get a really cool green to go with all of the greenery around the house. Something with a bit of yellow in it

Red would really make that beautiful door pop!! :)

the caliente red, danita suggested is a great red that won't jump at you. Just the door, as the house is perfectly proportioned as is.. I would add a great door knocker (in the door handle finish) and the effect will look fantastic. Congratulation on a great house. Enjoy !

Red or black and keep the frame white. Pretty house!

Gloss black...

Red would look really nice with the house but would draw all attention away from the landscaping. Therefore really think a green to make the landscaping pop out a bit more. Eyes are already drawn to the stark black/white contrast and geometric shapes of the house.

Royal blue!!!

I have a cream colored brick home with brownish black shutters. My very experienced painter suggested I use hues from my roof colors to tie into the shutter color and it looks great! I have a red door (his suggestions which I accent/complement with various colored plants throughout the year.

Either color could work, but maybe red door with black urns flanking front door (ferns do well in urns under my portico) and pretty wreath or door knocker:)

The siding on our house is a cream colour and we did the front door and shutters in glossy black. The garage door is a soft green (Benjamin Moore's Nantucket Grey). Plant tubs by the front door are black and other touches (backing on house number) match the garage door. Surprisingly it all works and looks amazing. Good luck and have fun!

I would strip the paint and stain it a dark, modern brown. Classy.

Black door & add flower pots for seasonal color;

This is not going to help but do consider colours in muted lavenders and pinks (when I say muted, I mean a more toned done colour with grey in it).BM Cabernet http://www.benjaminmoore.com/en-us/paint-color/cabernetor New London Burgundy http://www.benjaminmoore.com/en-us/paint-color/newlondonburgundy which are unusual colours that would contrast with the lush green landscaping and your white and dark shutters.

I always love a colored door! Gorgeous house btw!!! Whatever color you do decide paint in a high gloss it will look like glass and you will not stop looking at it. Whatever you do leave sides white!!! Good luck

A cobalt blue or black High gloss! :)

Pretty house, nice landscaping. Whatever color you pick I would go very glossy. I like the idea of black or a more unexpected royal blue as tntbarbee suggested.

I would paint the door a high gloss black and add pots with a burst of color. Brick red, burnt orange, or golden yellow would look wonderful. Don't be afraid to mix them up. Your home is awesome already!

Your house is beautiful and screaming for a red door! Try Fabulous Red by Valspar.