I love soft robins egg blue. As much as I try to work it in my house, it doesn't blend with my other colors. Blue holds its own and seems to dominate the space it's in, no matter how soft a color. At lease it does for me. Ahhh, but blue in the garden, not just a blue sky, but blue flowers and accent pieces seem to blend with every color in the rainbow.
I'm sharing some photos from the web and pinterest that are full of the blue color that makes me think of spring. Each photo has a link below it to take you back to the source where I found it. There are several homemade potting sheds. I am partial to little outbuildings in the back yard. Perhaps there is an idea here that would work well in your garden.
A blue garden shed!
Link
A blue Chinese rose
Homemade Blue Potting Table
Pale Blue French Doors on Shed
Pallets Potting Shed
Fence
Table
Window Fence
Boat Garden
Blueberry Sign