I have IRL of the Sloane and the Jinhee in blueberry. I believe the Sonia is more toward the Jinehee in type of leather and color (the Sloane being lamb leather looks a bit different shade of Bberry). I have the Sonia in anthracite. Great bag. Hangs wonderfully. Fits a laptop easily. Good choice.
Blueberry Jinhee (up close to show leather detail):
Sloane in blueberry lamb leather:
A word of caution on comparing these to your Sonia, from what I can see of Spring's blueberry in the HH look book, the blueberry this season seems to be a bit brighter and more "blue". I do not have a pic with me of the Sonia. Will post it later today.
I just got my blueberry Sonia from the sample sale...it's not as vibrant as in the pics on the site, it's very similar to the blues above. It's a true royal blue, very pretty. It's not smooth leather like my blue Sloane and it closely resembles the Jinhee above in texture. I'll try to post pics when I get a chance!