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Friends Art Lab / Blog / Rainbow Sponge Painting Art Project

Rainbow Sponge Painting Art Project

Author: Kristian Klebofski    Published: 03/02/2023     Updated: 02/18/2025

This rainbow sponge painting activity is an easy and exciting way for kids to create colorful art while exploring patterns, textures, and color blending. Just a warning: it’s hard to stop making these once you start!

A hand pulls a pink sponge across a white piece of paper and pulls a painted rainbow across making rainbow sponge painting. A paper plate with rainbow paint sits above the paper.
Table of Contents:
  1. Rainbow sponge painting is gorgeous every time
  2. Rain is a big deal here, so we do a lot of rainbow sponge painting
  3. Materials
  4. How to make rainbow sponge paintings
  5. What kind of paint do you use for sponge painting?
  6. Extensions for rainbow sponge art
  7. Rainbow sponge painting is always a hit!
  8. Frequently Asked Questions

Rainbow sponge painting is gorgeous every time

We have been doing this project for years and years, and it’s absolutely gorgeous each time you create a rainbow.

PLUS, because we have done this activity so many times, we have two quick tips that make it a success every time. It’s a simple project already, but our two very best tips make it fail-proof.

DOUBLE PLUS, the materials are the simplest (paper + paint + sponge), so you can start making these almost immediately.

🌈 Related: Check out all of the rainbows included in our Rainbow Unicorn coloring pages!

A hand pulls a pink sponge across a white piece of paper and pulls a painted rainbow across in the shape of an arch. A paper plate with rainbow paint sits above the paper.

Rain is a big deal here, so we do a lot of rainbow sponge painting

As much as we can in the preschool classroom, we connect our classroom activities to actual, tangible events and things the kids can see and interact with.

Enter: rain.

I love rainbow art in the spring because rain is a big deal here in California.

Whenever it rains, we love sharing fabulous rainbow projects (like this!) with our preschool students.

🌈 Looking for more rainbow activities? Check out these beauties:

  • Rainbow Drawing Activity (with FREE Printable)
  • Orizomegami Dip-and-Dye Art
  • Paper Towel Rainbow Hearts
  • Rainbow Kindness Rocks
The materials for the project: a white piece of paper, a paper plate with paint on it in rainbow order, and a dry sponge.

Materials

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  • Sponge
  • Paint – in colors red, orange, yellow, green, blue, and purple
  • White paper
  • Paper plate
  • Pen or pencil 
A close up of a dry, pink sponge that has been dipped into the rainbow paint and has paint in rainbow order across the edge of one side.

How to make rainbow sponge paintings

Begin by adding the paint to your paper plate in rainbow order.

🌈 QUICK TIP #1: Before adding the paint to the paper plate, set the sponge on the paper plate and draw two lines: one at the top of the sponge and one at the bottom. When you add the paint to the plate, make sure the paint fits inside these two lines.

Next, get your sponge ready to dip.

🌈 QUICK TIP #2: Use a dry sponge for this activity! I have seen many people recreate this activity with a wet sponge (and I have tested it myself), and it’s much, much easier for kids to manipulate when it’s dry.

Stick the end of the sponge into the paint, set it on the edge of your white piece of paper, and pull it across. As the sponge pulls across, you’ll see a rainbow appear before your eyes!

Dip the sponge into the paint again, making more and more rainbows. Once the paint is out, simply “refill.”

A close up of a painting where four rainbows have been pulled across the paper.

What kind of paint do you use for sponge painting?

Any kids’ paint should work great!

The only paint I wouldn’t use is acrylic paint simply because of its quick dry time. For this project, your kid will repeatedly dip the sponge into the paint, and acrylic can dry very quickly.

A close up of a painting where four rainbows have been pulled across the paper with an assortment of straight, curved, and wavy lines.

Extensions for rainbow sponge art

After making straight rainbows across the paper, invite your child to think of other things they could “draw” with the sponge.

Some fun ideas to try:

  • Vertical rainbows
  • Curved lines
  • Wavy lines
  • Letters
  • Shapes
A close up of a dry, pink sponge that has been dipped into the rainbow paint and has paint in rainbow order across the edge of one side. Behind is a rainbow sponge painting in progress.

Rainbow sponge painting is always a hit!

Watching rainbows effortlessly spread across a paper will always fill your eyeballs with hearts.

And since this activity takes seconds to prep, you can make rainbow sponge paintings all year long. Maybe you’ll make straight lines today, letters next week, flowers the next…

If you love this project, you have to try rainbow paint popsicles next!

Have fun, friends!

A close up of the paint on the paper plate in rainbow order.

Frequently Asked Questions

What age is this activity best for?

Any age that can manipulate the materials, but won’t try to eat any of them.

How long do these take to dry?

These dry pretty quickly since there isn’t much paint on the paper!

Does this stain the sponge?

It depends on the kind of paint you use. Our sponges didn’t stain (they were also washed quickly after the project was done).

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Kristian

Hi, I’m Kristian!

I have spent over 15 years in the preschool classroom, I have a Master's degree in Early Childhood Education, and I was a college professor of education for eight years. My passion is sharing creative learning activities for children and I'm so happy you're here.

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