Prisma Hat - Free Crochet Pattern in multiple sizes

If you love crocheting top down hats, the cheerful Prisma Hat is just what you're looking for!
It looks beautiful in rainbow colors, but you can use the colors of your choice and combine them as you wish.

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*Disclaimer: This post includes affiliate links and at no additional cost to you, I might earn a small commission if you decide to purchase through these links. Thank you!
Part of the yarns was provided by Red Heart Yarns.
Crochet Hook provided by Furls Crochet.

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The look of this hat reminded me of an optical prism that spreads white light into the colors of the rainbow. This is how the name of this hat pattern was born. Because Prisma means prism in many languages, such as German, Romanian, Italian and Spanish.

This beanie works up pretty quick, only the knit-look crochet cuff requires a bit more time, but it is so worth it! I think it looks really pretty!

You'll work the hat top down in rounds until the cuff; then the cuff will be crocheted in rows directly into the hat edge.
To embelish the hat you can use a ready made faux fur pom pom, or you can make your own faux fur pom pom or yarn pom pom.

SIZES:

• 3-5 year child: To fit 20 inches (approx. 50.8 cm) head circumference;
  Hat height: approx. 7.5 inches (19 cm)

• 6-10 year child: To fit 21 inches (approx. 53-54 cm) head circumference;
  Hat height: approx. 7.87 inches (20 cm)

• Teen/ Average Women: To fit 22 inches (approx. 55-56 cm) head circumference;
  Hat height: approx. 8 inches (20.5 cm)

SUPPLIES:

- 1 skein of Red Heart Soft ( shown here in White or Light Grey Heather ); yarn weight: 4 Medium, 5oz (141g), here color A

- 1 skein of Red Heart Super Saver - Retro Stripes; yarn weight: 4 Medium, 5oz (141g), here Color B

(For the rainbow look, I have cut yarn pieces from the Retro Stripes yarn for each color of the rainbow: blue, green, yellow, orange and pink)
You can also choose multiple solid color yarns from the Red Heart Soft to achieve the rainbow look)

- 5 mm crochet hook

- 5.5 mm crochet hook (shown here Furls Wooden Hook, Cocobolo)

- yarn needle

- scissors

- pom pom maker ( I have used a Clover Pom-Pom Maker, the large one for adult size and the small size for the small child) or a ready made Faux Fur Pom Pom

Please use my affiliate links to buy your supplies online! Thank you!

GAUGE:

With a 5.5 mm crochet hook: in hdc 13 sts and 10 rows = 10 cm x 10 cm (4 inches x 4 inches)

STITCHES AND ABBREVIATIONS (US TERMS):
- ch: chain

- ch arch: 5 chains here

- sc: single crochet

- hdc: half double crochet

- hdc blo: half double crochet worked into back loops only

- dc: double crochet

- sk: skip

- slst : slip stitch

- slst-blo: slip stitch worked into back loops only

- shell: (2dc, 1ch, 2dc) worked into same stitch

- beg: beginning

- ch1sp - chain one space

- sdc - standing double crochet (see the link to the video tutorial with seamless joins below)

- rep: repeat

NOTES:

Because the pattern repeat is a multiple of 8, to size up and down with 8 sts was to much from one size to another. That’s why I have made
- 2 sizes (3-5 year child and adult women) using a 5.5 mm hook and hdc increases for the crown of the hat.
- 1 size (6-10 year child) using a 5 mm crochet hook and dc increases for the crown of the hat

Seamless join into round:
For a perfect seamless look it was used a special joining into round - The invisible Join, while the rounds are started with standing stitches - See this Video Tutorial from Yay for Yarn on YouTube!

Seamless Color changes:
Using the current color, join into round with sl st to first st.
Pick up the new color and pull it through the loop on the hook. Tug the previous color tight. Start the new round with the new color making standing sts, as seen in the video linked above.

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Prisma Hat

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INSTRUCTIONS:

3-5 YEARS AND ADULT SIZE:

Increase rounds:
With hook size 5.5 mm and yarn color A make a magic ring.

Round 1: Ch1 ( will not count as a st here and throughout the pattern), work 8 hdc into ring. Join with sl st to top of the first hdc. (8 sts total)

Round 2: Ch1, 2 hdc in each st around, sl st to top of first hdc. (16 sts total)

Round 3: Ch1, *2 hdc in first st, 1 hdc in next st, rep from * around, sl st to top of first hdc. (24 sts total)

Round 4: Ch1, *2 hdc in first st, 1 hdc in each of next 2 sts, rep from * around, sl st to top of first hdc. (32 sts total)

Round 5: Ch1, *2 hdc in first st, 1 hdc in each of next 3 sts, rep from * around, sl st to top of first hdc. (40 sts total)

Round 6: Ch1, *2 hdc in first st, 1 hdc in each of next 4 sts, rep from * around, sl st to top of first hdc. (48 sts total)

Round 7: Ch1, *2 hdc in first st, 1 hdc in each of next 5 sts, rep from * around, sl st to top of first hdc. (56 sts total)

Round 8: Ch1, *2 hdc in first st, 1 hdc in each of next 6 sts, rep from * around, sl st to top of first hdc. (64 sts total)

Stop here with increases for small child size!

For teen/ average women continue with round 9 of increases:

Round 9: Ch1, *2 hdc in first st, 1 hdc in each of next 7 sts, rep from * around, sl st to top of first hdc. (72 sts total).

Sides without increases:

If you would like a visual help for the stitch pattern used for the sides of the hat, you can check out the Step by Step Tutorial in my Dreamy Christmas Stocking that uses the same stitch.

Both sizes:
Change to color B bei pulling it through the loop on the hook. Tug the yarns tight. Continue with B:

Round 1: work 1 standing dc into first st, 1dc into next st, *ch 5, sk next 5 st, work 1 dc into each of next 3 sts; rep from * to last 6 sts, ch5, sk next 5 sts, ending the round with 1 dc into last st; invisible join with sl st to top of standing dc.

For small child size you’ll have 8 blocks of 3dc and 8 ch5 arches.

For teen/small adult you’ll have 9 blocks of 3dc and 9 ch5 arches.

Round 2: change to A, ch1, work 1 sc in same st, 1 sc into next dc, *work 1 shell into the 3rd. from the 5 skipped hdc 2 rounds below, work 1 sc into each of next 3 dc; rep from * to last ch5 arch, work 1 shell into the 3rd. from the last 5 skipped hdc 2 rounds below, ending the round with 1 sc into last dc of previous round, invisible join with sl st to top of first sc.
(8 shells made for small child size/ 9 shell for adult).

Round 3: change to B, work 1 standing dc into first sc, 1 dc into next sc, *ch 5, sk next shell, work 1 dc into each of next 3 sc; rep from * to last shell, ch 5, sk last shell, 1 dc into last sc, invisible join with sl st to top of standing dc.

Round 4: change to A, ch1, 1 sc in same st, 1 sc in next dc, *work 1 shell into ch 1 space of next shell 2 rounds below, 1 sc in each of next 3 dc*, rep from * to last ch 5 arch, 1 shell into ch1 sp of last shell 2 rounds below, 1 sc into last dc, invisible join with sl st to top of first sc.

Rounds 5-8: Rep as rounds 3 - 4, ending with a round 3 (with color B) repeat.

Round 9: To even out the edges a bit, work the last shell round this way:
Ch1, sc in same st, 1 sc in next dc, *(1 dc, 1hdc, 1sc, 1hdc, 1dc) into chsp of shell 2 rounds below, 1 sc in each of next 3 dc*, rep from * to last ch 5 arch, work (1 dc, 1hdc, 1sc, 1hdc, 1dc) into ch1 sp of last shell 2 rounds below, 1 sc into last dc, invisible join with sl st to top of first sc.

You should have 5 shell rounds for both small child and adult sizes!

Do not cut yarn!

Continue working with A the ribbing around the edge of the hat!

Ribbing:
For the ribbing I have alternated 1 row of slip stitches worked into the back loops only with 1 row of half double crochet worked into the back loops only.
This combination has created a knit-look stretchy crochet ribbing.

Change to hook size 5 mm!

Chain 5, turn!

Row 1: working into back bumps of chains, slst into 2nd ch from hook and work 1 slst in each next 3 ch;
slst in next 2 sts along the hat edge, turn! (4 sts total)
(It is important to not crochet back into the same st on the edge, otherwise your ribbing will end up too wide!)

Row 2: Do not chain! Sk the last 2 slst just made on the edge of the hat; work 1 hdc-blo in each of the 4 slsts of the ribbing.Turn. (Do not make your sl sts very tight, so you can crochet into them!)

Row 3: ch 1, work 1 slst-blo in each of next 4 hdc, slst in next 2 sts along the hat edge, turn! (4 sts)

Repeat as rows 2-3 around the hat edge, untill you have just 1 st left on the edge.

Sl st into last st on edge and slst to join to first st on edge. Cut yarn, finish off. Turn the hat inside out and sew (or crochet) the sides of ribbing together. Weave in all ends.

You should have a number of ribs that is the half of the total sts had for the sides of the hat. For example: 3-5 years child for 64 sts around, you’ll have 32 ribs, for teen/adult 72 sts around = 36 ribs.

SIZE 6-10 YEAR CHILD

Increase rounds:
With hook size 5 mm and yarn color A make a magic ring.

Round 1: Ch2 ( will not count as a st here and throughout the pattern), work 12 dc into ring. Join with invisible slst join to top of the first dc. (12 sts total)

Join all next rounds with invisible join!

Round 2: Ch1, 2 dc in each st around, slst to top of first hdc. (24 sts total)

Round 3: Ch1, *2 dc in first st, 1 dc in next st, rep from * around, slst to top of first dc. (36 sts total)

Round 4: Ch1, *2 dc in first st, 1 dc in each of next 2 sts, rep from * around, slst to top of first dc. (48 sts total)

Round 5: Ch1, *2 dc in first st, 1 dc in each of next 3 sts, rep from * around, slst to top of first dc. (60 sts total)

Round 6: Ch1, *2 dc in first st, 1 dc in each of next 4 sts, rep from * around, slst to top of first dc. (72 sts total)

Continue with hook size 5 mm the sides without increases the same as written above for the adult size, making 6 rounds of shells.

Work the Ribbing the same as for the other sizes. You’ll have 36 ribs around.

Add a Pom Pom:
You can either make your own yarn pom pom using a cardboard or a pom pom maker, such as Clover Pom Pom Maker; or you can add a beautiful, removable Faux Fur Pom Pom with press buttons.

I hope you enjoy this pattern! For more free crochet patterns and tutorials, please visit my FREE Crochet Pattern Page!

Many thanks to Red Heart Yarns for providing the Retro Stripe yarn used for this pattern!

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Written Instructions and Pictures - Copyright © 2018 Kinga Erdem
This pattern is free for your personal use, you can sell the products of your work, a link back to my blog would be appreciated.
Do not use my photos for selling purposes or modify them in any way.
Please don't repost the pattern itself to any other sites, but please share the link to the pattern if you want to share the pattern with your friends.
You may not give away copies of this pattern.
Do not make video tutorials or translate my pattern in other languages without my written consent!
Thank you.
Kinga