Those colors are very gray. If you really want blue those will not be right, although I think you're on the right track by leaning gray. If you choose something that looks BLUE on a paint chip it could be really overbearing on a house. Consider Aleutian. It is more blue than either of the two colors you're thinking about, but it's not a strong blue.

You will get more confidence in your choice if you sample the color in daylight. Sunlight washes colors out and also can bring out undertones that you wouldn't otherwise see. Paint a large board with two coats of the color you want to sample and hold it up to the house on all four sides. Stand back and look at it from different distances.

^Agree you need to test and that colors can look different in exterior light. Be cautious of purple undertones, unless that’s what you want. Make sure to factor in the roof color, too. The gray roof in your photo is nice.

Uncertain gray would be the one!!

Never select colors from a computer screen or picture.

Thanks everyone, I ended up going with Colonial Revival Gray. SW 2832