Answer: The easy answer is to have blue decorations, blue in the bridal bouquet, a blue cake.... you get the idea.
Since blue is so special to you, you may want to take it to the next level. In literature, blue often represents wide open spaces - the ocean and the sky.
If you like the ocean, you may want to consider a beach theme. Your ceremony can include a sand ceremony, with different shades of blue sand. Another option is a blessing ritual in which guests make a wish or bestow a blessing on seashells. The seashells are collected and placed in a decorative container which is then a pretty and meaningful keepsake for you.
A water-themed reading you can help you illustrate your blue ocean theme.
A great example is the poem, "Beach Chairs" by Joyce Ebrecht:
Sitting on the beach chairs
watching the setting sun
holding hands and reminiscing
how it all begun
Sitting on the beach chairs
watching the ships out on the sea
holding hands and smiling
together we're meant to be
Sitting on the beach chairs
watching people walking past
holding hands and knowing
that our love will always last
Sitting on the beach chairs
watching the waves along the shore
holding hands we realize
our love is stronger than before
Sitting on the beach chairs
watching the changing tide
holding hands with happiness
to be by each others side
Sitting on the beach chairs
watching the sunrise
holding hands with tears of joy
there are no more good-byes
Don't be afraid to be creative. But most of all, let your personality (and your love of blue!) shine through on your wedding day.