Rainbow Granny Square | Free Crochet Pattern

Bring a burst of color and joy to your crochet with this cheerful Rainbow Granny Square pattern!

I designed this square as part of the Unicorn and Rainbow blanket I’m making for my daughter. A playful, colorful project inspired by her love for unicorns and my own desire to create something bright and happy.

This rainbow square is a classic design with a fun twist. It’s simple to make, but full of personality. Whether you’re using it to build a vibrant blanket, a playful cushion, or even adding it to clothing, it’s a lovely way to add warmth and color to any project.

I hope it brings as much joy to your hook as it did to mine!

If you love the unicorn theme, be sure to check out my free Unicorn Granny Square pattern as well. Both squares pair perfectly together to create a magical and colorful collection.

Disclaimer: This pattern is for your personal use only and cannot be sold, copied, or reproduced in any way without permission from the designers. You may sell finished objects made from this pattern in small quantities but please provide pattern credit back to crazycrochetstudio.com as the pattern designer when posting online. Do not use my photos when selling your finished items.

Materials

For this cheerful Rainbow Granny Square, you’ll be working with soft, colorful DK (double knit) yarn. Perfect for creating that classic, cozy texture we all love. I used Stylecraft Special DK, one of my favorite yarns for its beautiful color range and smooth finish.

Here’s what you’ll need to get started:

• Yarn: Stylecraft Special DK, 1 ball of each color:
  White, Cloud Blue, Jade, Lemon, Fondant, Pomegranate, and Wisteria
• Hook: 4.0 mm crochet hook
• Extras: Tapestry needle for weaving in ends and a good pair of scissors

Feel free to mix and match your favorite shades to make your square truly unique! The rainbow effect works beautifully in any combination of bright or pastel tones.

Abbreviations & Notes

Before you get started on your Rainbow Granny Square, here’s a quick look at the stitches and notes you’ll need to follow along smoothly. This pattern is written in US crochet terms, and once you get into the rhythm, it’s a relaxing and colorful make!

Abbreviations:

• CH = chain
• SL ST = slip stitch
• SC = single crochet
• HDC = half double crochet
• DC = double crochet
• TC = treble crochet

A few helpful notes before you begin:

• Stitches written between { } should be worked into the same stitch or space.
• The square is worked entirely with the right side facing you, so there’s no need to turn your work between rounds.
• At the start of each round, remember that a chain 3 counts as your first double crochet (DC) stitch.

Finished size

The finished Rainbow Granny Square measures approximately 17 x 17 cm (6.6 x 6.6 inches), making it a lovely size for incorporating into blankets, cushions, or other colorful projects. If you’d like to make your square larger, there are plenty of ways to customize it: try using a thicker yarn, switching to a bigger crochet hook, or adding additional rounds to expand the design. This flexibility allows you to tailor the square to suit your vision perfectly, whether you’re creating a bold centerpiece or a cozy blanket full of cheerful color.

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FREE CROCHET PATTERN: RAINBOW GRANNY SQUARE

Pattern instructions

Below you’ll find the full written instructions for creating your Rainbow Granny Square. a cheerful, colorful project that’s perfect for using up yarn scraps and adding a pop of joy to any blanket or crochet project

Round 1:

Use color WHITE
Make a magic ring. Chain 3 and 11 DC in the magic ring. To close the round slip stitch into the top of the first ch 3 and tighten the ring. (12)

Round 2:

Change to color CLOUD BLUE
CH 3, 1DC in the same stitch, {2 DC} in each of the remaining stitches. SL ST to 3rd CH of the beginning CH3. (24)

Round 3:

Change to color JADE
CH 3, 1 DC in the same stitch. 1 DC in the next stitch.
Repeat pattern between ** until you reach the end: *{2DC}, 1DC*
SL ST to 3rd CH of the beginning CH3. (36)

Round 4:

Change to color LEMON
CH 3, {2DC} in the next stitch.
Repeat pattern between ** until you reach the last stitch: *2 DC, {2DC}*.
1DC in the last stitch, SL ST to 3rd CH of the beginning CH3. (48)

Round 5:

Change to color FONDANT
CH 3, 1 DC in the same stitch, 3DC .
Repeat pattern between ** until you reach the end: *{2DC}, 3DC*.
SL ST to 3rd CH of the beginning CH3.(60)

Round 6:

Change to color POMMEGRANATE
CH 3, 1 DC in the next stitch, {2DC} in the next stitch.
Repeat pattern between ** until you reach the last two stitches. *4DC, {2DC}*.
2DC, SL ST to 3rd CH of the beginning CH3. (72)

Round 7:

Change to color WISTERIA:
CH 6 (counts as the first TC and CH 2 space), {2TC} in the same first stitch – this is the first corner.
1TC, 2DC, 3HDC, 5SC, 3HDC, 2DC, 1TC, {2 TC, CH 2, 2 TC} – this is the second corner.
1TC, 2DC, 3HDC, 5SC, 3HDC, 2DC, 1TC, {2 TC, CH 2, 2 TC} – this is the third corner.
1TC, 2DC, 3HDC, 5SC, 3HDC, 2DC, 1TC, {2 TC, CH 2, 2 TC} – this is the fourth corner.
1TC, 2DC, 3HDC, 5SC, 3HDC, 2DC, 1TC, Make another 1 TC in the very first stitch of round 7, SL ST to the fourth chain of the beginning chain 6. (21 stitches per side, plus 2 CH at each corner).

Round 8:

Slip stitch into first corner space.
CH 6 (counts as the first TC and CH 2 space), {1TC and 1DC} in the same corner space – this is the first corner.
21 DC, {1DC, 1TC, CH2, 1TC, 1DC} in corner space – this is the second corner.
21 DC, {1DC, 1TC, CH2, 1TC, 1DC} in corner space – this is the third corner.
21 DC, {1DC, 1TC, CH2, 1TC, 1DC} in corner space – this is the fourth corner.
21 DC, Make 1DC in the first corner space, SL ST to 4rd CH of the beginning chain 6. (25 stitches per side, plus 2 CH at each corner).

Round 9:

Slip stitch into first corner space.
CH 5 (counts as the first DC and CH 2 space), {2DC} in the same corner space – this is the first corner.
25 DC, {2DC, CH2, 2DC} in corner space – this is the second corner
25 DC, {2DC, CH2, 2DC} in corner space – this is the third corner
25 DC, {2DC, CH2, 2DC} in corner space – this is the fourth corner
25 DC, Make 1DC in the first corner space, SL ST to 3rd CH of the beginning chain 5. (29 stitches per side, plus 2 CH at each corner).

Round 10:

Slip stitch into first corner space.
CH 5 (counts as the first DC and CH 2 space), {2DC} in the same corner space – this is the first corner.
29 DC, {2DC, CH2, 2DC} in corner space – this is the second corner
29 DC, {2DC, CH2, 2DC} in corner space – this is the third corner
29 DC, {2DC, CH2, 2DC} in corner space – this is the fourth corner
29 DC, Make 1DC in the first corner space, SL ST to 3rd CH of the beginning chain 5. (33 stitches per side, plus 2 CH at each corner).

Slip stitch into first corner space, fasten off and weave in all ends.

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Great to combine with:

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