43 Rainbow Cakes & Party Ideas
If you’re looking for fun and colorful party cakes and desserts, Rainbow Cakes are always a hit. From classic layered cakes to whimsical unicorns, these designs are perfect for birthdays, baby showers, and any party that needs a pop of color. If you need a rainbow cake idea – you’re in the right place!
Rainbow Cakes
I love that the colors of the rainbow can fit so many different themes from Noah’s Ark, fiestas and painting to unicorns and St. Patrick’s Day! There’s lots of colorful inspiration ahead! And the great thing is, if you need the inside of your cake to be colored, I have a rainbow cake recipe for that here too!
Why Rainbow Cake Designs Are So Popular
- They’re joyful and eye-catching – the colors make people smile instantly.
- They work for almost any occasion – birthdays, holidays, graduations, or themed events.
- They’re endlessly creative – from buttercream swirls to fondant details, you can design them to fit any style.
20+ Rainbow Cakes & Party Ideas
Ruffled Rainbow Fiesta Cake
This ruffled rainbow cake is festive and fun, perfect for a fiesta-themed party.I just love the rainbow of ruffles! I’ve seen lots of cute llama-themed parties that this would be a perfect centerpiece for, or even for Cinco de Mayo!
You Are My Sunshine Rainbow Cake
I adored doing this cake with all the tiny bows on the sides of the cake, the rainbow colors, the bright happy sunshine and clouds. It was perfect for a rainbow party!
Buttercream Rainbow Cake
And then there’s this sweet homemade rainbow cake! It’s extra tall and so pretty with all the blended buttercream!
Buttercream Rainbow Cake with White Drip
Next is this beautiful buttercream rainbow is so striking next to the white drip. The bright white really makes the vibrant color pop! All Things Cake member, AlSa Azeem of AlSa’s Delicious Delight shared this beauty with us! I made a similar cake here:
Unicorn Cupcakes
Y’all. I’m swooning over here looking at these gorgeous unicorn cupcakes. The unicorns themselves are perfection and the rainbow buttercream cupcakes mixed in with them complete the look. These are from another All Things Cake member, Ana Rash of Coco-Nuts.
Rainbow Cupcake Cake
I also made a rainbow cupcake cake here… go see how to do that!
Rainbow Cake Pops
When browsing through Pinterest the other day, these immediately caught my eye. The simple white cake pops with rainbow sprinkles are pretty, but the wow comes when you take a bite and a rainbow is revealed in the cake layers. These are by Tastemade, and they have a video showing you just how to make them!
Rainbow Brite Birthday Cake
Raise your hand if you’re a fan of Rainbow Brite!! I have mine raised for sure. Danielle Vega of A Piece of Cake, nailed this childhood dream cake of mine for sure. Rainbows on every tier plus the cake board!
Rainbow Chevron Painting Party Cake
I love painting parties! They’re so fun and creative and COLORFUL! This cake had the trendy chevron pattern (in rainbow colors) plus splatters of paint and a fun number topper!
Trolls Rainbow Cake
Next is this Trolls cake by Celia González of Sweet C’s Bakery was a popular one on the All Things Cake post of rainbow cakes. What an amazing rainbow topper connecting two cakes! She mentioned how she made the rainbow in the comments of the post if you were wowed like me!
Perfect Buttercream Rainbows on a Cake
I absolutely adore this cake by Cake by Courtney. Those perfect buttercream rainbows elevate a simply iced cake. I’ve seen this cake in my Pinterest feed several times, and it makes me smile every time. Best part? There’s a tutorial for how she made the rainbows on her website.
Classic Rainbows
This vivid rainbow cake immediately caught my eye! Dora Gonzalez Moreno submitted this classic rainbow in the All Things Cake group.
3D Rainbow in the Clouds Cake
This Rainbow in the Clouds is a cake my assistant Susan did a few years ago for her daughter’s birthday. She absolutely loves rainbows. Over the years, she’s had a rainbow paint party, a rainbow candy party, a rainbow unicorn party, and this rainbow in the clouds party!
Rainbow Macarons
Now, this Rainbow Macaron Tower from Everyday Annie is what I want for my birthday! It’s gorgeous and I love macarons. She gives tips on how to make the macs on her website. I’ve got to give these a try really soon!
Lucky Charms Rainbow Cake
This cake makes me want a big bowl of Lucky Charms! This super cute cake is by Emily Glover of Sweet Pea Cakes. You can see more of her really pretty cakes and cupcakes on her Instagram page.
Rainbow Cupcakes
How fun are these cupcakes!? Dawn Beattie of Midnight Cakes shared these vibrant buttercream beauties in the All Things Cake group. They stood out when scrolling through the members’ beautiful submissions!
Messy Ruffles Rainbow Cake
This buttercream Rainbow Messy Ruffles Cake by Rose has always been a favorite of mine! She has a lot more details on this cake here, and a tutorial on how to do the messy ruffles here.
Neon Rainbow Buttercream Ruffles Cake
This is a similar cake as the one above it, except I used electric gel colors to make the rainbow colors especially bright!
Rainbow Cookies
I just LOVE these Rainbow Heart Cookies! Eugenie Kitchen shows us step by step how to make these fantastic slice and bake sugar cookies.
My Little Pony Rainbow Cakes
Here’s another cake I totally would have loved as a kid! This My Little Pony cake by Kristen Welch of Just Think Cake is just precious!
Here’s another My Little Pony Rainbow Cake made by yours truly!
Sparkly Rainbow Cake
Sparkly rainbow? Yes, please! Loving the topper for this cake! I don’t envy the time it took for all those fondant ruffles, but they sure are pretty! Maria Elizaincin of Be Sweet, by Maria shared this beautiful cake with us over on All Things Cake.
Rainbow Streamers Cake
I love this cake from the fluffy clouds on top to the twisted streamers on bottom. Priscilla Veale of Lolo’s Cakes and Sweets made this beautiful rainbow cake.
My Little Pony Rainbow Dash Cupcakes
Aren’t these just adorable!? I made these cupcake toppers based on My Little Pony’s Rainbow Dash.
Rainbow Baby Shower Cake
This is such a stunning work of art with the rainbow bleeding down the side and coming up over the top of the cake! This Rainbow Baby Shower Cake by Caking It Up caught my eye browsing Pinterest.
St. Patrick’s Day Rainbow Cake
Patricia Martyres shared this awesome St. Patrick’s Day cake with us in the All Things Cake group. The isomalt rainbow caught the eye of many members! Beautiful work, Patricia!!
Rainbow Unicorn Cakes
Nothing goes together better than rainbows and unicorns and I have made more than a few of those! Here are some favorites (above and below). The one above was a naked cake with just a crumb coat of American buttercream revealing the layers of cake underneath, but then taken to the next level with the gold drip, the gold stars, the rainbow and the unicorn over the white frosting.
Unicorn Rainbow Cake
Here’s a different take on a unicorn cake. This lovely pastel cake with unicorns in the clouds was submitted by Rhashida Rubio of The Artsy Cake. She had so many lovely creations on her Facebook page!
Rainbows &Chevrons
Here’s another mix of the trendy chevron patter and rainbow colors. This fondant decorarted cake also has the cutest bunting topper!
Elmo Rainbow Cake
And if you love that last cake, you’ll also love this Elmo Rainbow Cheveron cake with primary colors!
Rainbow Cupcakes
I love, love, loved doing these Rainbow Cupcakes with all the different colors and textures of different piping tips! Kids love being able to pick their own favorite color cupcake.
There were also these rainbow cupcakes – in a perfect swirl!
St. Patricks’ Day Easy Rainbow Cake
This cake is super sweet and easy – a perfectly piped Rainbow Cake by Melissa from MyCakeSchool. She has a full tutorial!
Rainbow Drip Cake with Sprinkles
This stunning rainbow drip cake is one of my all-time favorites! It’s just SO fun with the drips and all fun sprinkles on the outside of the cake!!
Rainbow Shaped Cake with Unicorn
I love the fun cake trend of cakes standing on their side. It was the perfect canvas for a rainbow and tiny unicorn cake!
Muted Rainbow Cakes
I’ve had a couple of requests for these muted colored rainbow cakes (boho rainbows to some). The pinks and tans and browns are really beautiful combined with the whimsy of rainbows. Here’s another example below:
(I couldn’t decide which cake stand I liked best)
This Rainbow Barbie Cake was a special request by my daughter when she was a little girl 💗 You can read all about it here.
Hapyp Sunshine & Rainbow Cake
And last, but certainly not least is this gorgeous Happy Sunshine and Rainbow Cake! Traci Martin of The Cake Crusader executed this cake beautifully!
Leave me a comment with your favorite
This wraps up 20+ Rainbow Cakes & Party Ideas filled with colorful inspiration! Hope you liked looking at them as much as I did! Join us on the All Things Cake group and on Pinterest for more inspiration.
Question about the Rainbow in the Clouds cake. Does this have any cake or is what we see all Rice Krispie treats? Most shapes of this type seem ro be shaped with this medium then covered.
The top of the cloud is cake. It has a board in the cloud attached to the structure inside the rainbow. The bottom of the cloud were halves of styrofoam balls all covered with fondant.
Do you make a cookie cake? Please share recipe and decorating
Sorry, we don’t have a recipe for cookie cakes.
These rainbow cake party ideas are a burst of color and joy. From vibrant layers to creative decorations, they offer inspiration for lively celebrations. A delightful way to add a touch of magic to any special occasion.
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