Hard to say exactly what color it is, but here are blue greens and some mints that could work (always try out samples against your own home and in the natural light)

Consider painting your garage doors the same color as your siding. I like teal or turquoise with tan: Navy would look very classic: Red is also a nice choice with tan It is hard to tell from the picture if you have a patio/terrace in front of the lone window between the garage doors and the front door or not. If you do add a black bench with pillows that are the same color as the front door. If you do not have a terrace there, consider adding one with some plants in pots for more color and fun. No to shutters, the house already has a lot going on.

Thank you Beth such fantastic suggestions. I have really struggled as we wanted to keep structure of the house - both bc was well made and had character (like brick and stone) and also because I despise creating waste so did not want to knock down whole house BUT when we started this I would have never guessed what a challenge it would be to pick things that worked with both brick, hardie plank siding added and stone work. The door was one of final pieces and I am so relieved it is all coming together to still reflect character to house but not look like we made a mistake by renovating instead of tearing down.

I'm confused- I thought a storm door is all glass. Is the outside door glass or screen? If you have a screen door, In your neck of the woods, is a screen door important for getting a breeze inside the house and saving $$$ on air-conditioning? In your neck of the woods, is having your door open with the just the screen door closed important for that friendly neighbor feeling that communicates "Hi, I'm home, I'm approachable?" If so, keep that screen door. Being perceived as neighborly is way more important than how well people can see the color of your door. You can punch up the color with your plantings in front of the house and with hanging baskets hung from the porch ceiling. And you can still have your red door.