Maybe something similar to Cornforth White in the F&B range, this is a more creamy neutral colour.
Is there anything about the setting of the house that will give you some ideas? This pale grey is nice and so is this kind of pale coffee colour. The contrast trim adds interest and character. Maybe you could try two tones as well, painting the recess under the porch a darker shade? Food for thought! These photos are from Pinterest. If you type in "painted board houses" you'll get a bunch of useful images coming up :)
Hardie Board-Benjamin Moore Sandy Hook Grey and Trim-Benjamin Moore Manchester Tan
Pale grey ?