25 Watercolor Rainbow Painting Ideas

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Watercolor rainbows are simple to paint and look so cute. If you’re looking for watercolor rainbow painting ideas, you’re going to love the paintings I’m sharing below.

These watercolor paintings make great wall art for your home, greeting cards for loved ones, and even prints that you can sell.

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Gather Your Watercolor Supplies

six watercolor rainbow options

Credit: kreativakademie

be kind rainbow

Credit: letteringirem

muted colors rainbow

Credit: letterleuchten

multiple rainbow paintings

Credit: mamafabrics

Choosing Your Tools

As a watercolor artist, having the right tools can make a big difference in your work.

Using quality tools and materials is a great way to ensure that your finished work has the best possible results.

You don’t have to spend a ton of money either. You can purchase quality paper, brushes, and paints at a reasonable price.

simple rainbow painting

Credit: milasframes

choose to be kind

Credit: mrshandpainted

three color rainbow

Credit: mrsmonkstudio

dripping rainbow with clouds

Credit: ngmstyle

Pay Attention to Your Brushes

When you start with watercolor, you may feel that you need a large assortment of brushes. This isn’t true.

Certain types of brushes will give you different results. To start, you’ll want to have the following brushes: a spotter brush, round brush, flat brush, mop brush, liner brush, and a fan brush.

If you own these seven types of brushes, you’ll be off to a good start.

rainbow with paint splatters

Credit: oliv_overtherainbow

blue rainbow with crown

Credit: oliv_overtherainbow

purple rainbow with hearts

Credit: oliv_overtherainbow

blue and gold rainbow notebook

Credit: prettylittlecompany

Start Light Then Go Dark

When you watercolor, you’ll want to start with light colors and work your way towards the darker shades.

It would be best if you did this because once you apply the dark colors, it’s more difficult to undo any errors.

small rainbows

Credit: satohom.39

small pink and gold rainbows

Credit: schoengeist_design

rainbow with patterns

Credit: semisart

blue and gold rainbow watercolor

Credit: the_messy.ish.masterpiece

Mixing Your Paint

When mixing paint, it’s good to mix more paint than you think you’ll need. That’s because if you run out of the color, it won’t be easy to get the exact shade that you were using previously.

imperfect watercolor rainbow

Credit: vin.creates

large rainbow says hello

Credit: withloveby_brooke

somewhere over the rainbow, skies are blue quote

Credit: abcdailydoodle

go anywhere be anything rainbows

Credit: alittlelovecreative

Make Sure You Have Paper Towels

As you are working on your paintings, you’ll find that it’s beneficial to have paper towels on hand.

You can use them to clean and dab your brush. You can also use paper towels to dab your paper while you work.

single large rainbow watercolor

Credit: artlettersbykaye

muted colors large rainbow

Credit: die_farbenmischerin

large rainbow using greens and blues

Credit: die_farbenmischerin

rainbow over mountains watercolor painting

Credit: jenpicicci

page filled with mini rainbows

Credit: kat.t.illustrations

I hope you’ve found some great watercolor rainbow paintings to inspire your next piece of art.