There are so many different shades of blue that can be used on blue wedding cakes. You could have the whole cake tinted in this color or use a white on white cake with blue flowers. Either way, it makes for a stunning presentation!
If you plan on using a floral arrangement on your cakes (whether with real flowers or sugar/fondant hand rolled floral creations), be sure to take a sample blue flower with you to the cake decorator. In this way, you'll be sure to get a good match on the cake to your flower decorations. No sense leaving it to chance.
Below, you will find several beautiful pictures of blue wedding cakes to give you some exquisite design ideas.

This is a lovely, classic 3-tiered cake with white-on-white icing.
Draped with draped scallops and detailed icing edging the rims of each layer, it creates a perfect backdrop for the clusters of deep and aqua blue flowers that have been casually positioned on each tier.
Choose small clusters of flowers for this type of cake, as you don't want to hide the decorative icing. Good choices are Delphinium, Forget-Me-Not, Grape Hyacinth, and Tweedia.

Delicate blue flowers adorn this white cake creating a fantasy fairy-like look.
Tiny iced flowers with yellow centers rim the second and third tiers with a few delicate sprays branching out from the cake.
The bottom layer features an elegant scalloped fringe design and is finished with an iced shell border.
This is a beautiful blue wedding cake that is a perfect choice for a summer wedding.

This sweet creation is a unique choice for a blue themed cake.
Covered in a tinted fondant, a diamond shaped pattern has been imprinted along the sides and tiny silver candy beads highlight each diamond tip.
A simple adornment of white roses and English ivy create an effect that is elegant and sophisticated.

The white roses and contrasting blue delphinium cascading down this tiered cake is gorgeous.
Delicate piping along the tiers present a soft, art deco feel to the overall look of this creation.
As an added bonus, by choosing different colors and flowers, you can create an entirely different look using this same basic cake design.
For example, you could use blue and yellow wedding flowers if that is the theme colors for your celebration.
Another unique option would be chocolate brown and blue wedding colors. (As a side note: there are brown roses called Terra Nostra - but since you can get your icing-formed flowers tinted any color you want, why not just use your favorite floral choice?)

When it comes to blue wedding cakes, here's a lovely alternative to the typical round shape.
This 2-tiered square wedding cake is decorated in Swiss dots with the bottom layer having additional piped freehand embellishments.
A piped shell border finishes off the bottom of both layers and a lovely cluster of blue Hydrangea crown the top of the cake.
The simplicity of the design is what will make this cake choice a sophisticated focal point at your wedding reception.
Instead of Hydrangeas, use your own blue flower arrangement to top the cake, adding a few scattering of petals on the cake table as well.
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