If you’re searching for a timeless, fresh crochet project with a touch of retro flair, this blue and white circle-in-square blanket is the perfect piece. Its crisp, geometric design features striking concentric circles in shades of blue and white, expertly framed within soft-edged granny squares. Each motif stands out, creating a clean, repetitive pattern that catches the eye and brings significant texture and harmony to the finished blanket.
The motif itself is alluring—vivid rounds of denim blue, light blue, and white radiate from a puffy flower-like center, enclosed by clean white borders. The effect is bright and bold, yet elegantly simple. Whether you use it as a bedspread, a couch throw, or turn individual squares into matching pillows or accent decor, this crochet project breathes calm and style into any modern or traditional space. Assembling these modular squares is satisfying and approachable, resulting in a showpiece you’ll cherish for years.
What makes this project a pleasure to make is the rhythmic repetition of each square, with enough variation in stitches—from puff stitches to classic doubles—to keep things interesting. The join-as-you-go method ensures a seamless finish, while the flexible motif offers room for customization in both size and color. Read on for a comprehensive guide to crocheting your own beautiful vintage-inspired circle-in-square blanket.
Project Overview
This blanket is constructed from individual granny square motifs, each beginning with a textured, multi-round circle at the center. The motif is then squared off with additional rounds, transforming the circle into a crisp square. Once all motifs are finished, they are joined together (typically using a join-as-you-go or whipstitch method), then finished with a neat border. The pattern can be repeated to make blankets, pillows, or even wall hangings.
Skill Level
Intermediate
This project uses a range of crochet techniques: puff stitches for a textured center, color changes, increasing in the round, seamless joins, and switching from circular to square shaping. It’s suitable for crocheters familiar with both basic and some intermediate stitches, as well as those comfortable with colorwork.
Materials
- Yarn: Worsted weight (medium, #4) cotton or acrylic yarn for crisp stitch definition and durability.
- Total Amounts: For a throw (approx. 48 x 72 in / 122 x 183 cm), estimate:
- White (main color): 1600–1800g (approx. 3150–3600 yds)
- Denim blue (circle accent): 400g (approx. 700–800 yds)
- Sky blue (circle inner): 300g (approx. 525–600 yds)
- Crochet Hook: US size H-8 (5.0 mm) or size needed for gauge
- Tapestry needle
- Scissors
- Stitch markers (optional, for joining squares)
- Measuring tape
Finished Size
Each finished square measures approximately 17 x 17 cm (6.75 x 6.75 in). A full blanket of 6 squares wide by 9 squares long will measure roughly 102 x 153 cm (40 x 60 in) before blocking. Add or subtract squares to customize blanket dimensions. Pillow covers are made by joining 2 squares for each side.
Gauge
1 square should measure approximately 17 x 17 cm (6.75 x 6.75 in) after blocking. If your square is larger or smaller, adjust your hook size or tension to match the motif size. Small gauge differences can affect the blanket’s final size; consistency matters most.
Stitches and Abbreviations
- ch – chain
- sl st – slip stitch
- sc – single crochet
- hdc – half double crochet
- dc – double crochet
- tr – treble crochet
- puff – puff stitch (explained below)
- inc – increase (2 sts in same st)
- MR – magic ring
- st(s) – stitch(es)
- RS – right side
Puff stitch: [Yarn over, insert hook in indicated stitch, yarn over, pull up a loop] 4 times (9 loops on hook), yarn over and pull through all 9 loops, ch 1 to close.
Important Pattern Notes
- Unless otherwise stated, ch-2 at the beginning of rounds does not count as a stitch.
- Rounds are generally joined with a sl st in the top of the first st.
- Change colors by joining new yarn with a sl st at the beginning of a round.
- Work all squares with the RS facing you, unless specified.
- For best results, block finished squares before joining.
- Use a stitch marker to mark the first st of each round if needed.
Detailed Crochet Pattern
Part 1: Circle Center
Using light blue yarn.
- Round 1: MR, ch 1, work 8 puff stitches into the ring (each separated by ch 1), join with sl st to top of first puff. (8 puff sts, 8 ch-1 sps)
- Round 2: ch 2, (does not count as st), in each ch-1 space: 2 puff sts separated by ch 1. Repeat around, join with sl st to top of first puff. (16 puff sts, 16 ch-1 sps)
- Fasten off and switch to white yarn.
Part 2: Middle Blue Ring
Using white yarn.
- Round 3: Join yarn in any ch-1 sp. Ch 3 (counts as dc), 1 dc in same sp, then 2 dc in each ch-1 space around. Join with sl st to top of ch 3. (32 dc)
- Round 4: Ch 2 (does not count), *1 hdc in each st around*, join with sl st to first hdc. (32 hdc)
- Fasten off and change to denim blue.
Using denim blue.
- Round 5: Join yarn in any hdc. Ch 3 (counts as dc), 1 dc in next st, *2 dc in next st, 1 dc in each of next 3 sts*; repeat from * to * around, end with 1 dc in last st. Join with sl st to top of ch 3. (40 dc)
- Round 6: Ch 2 (does not count), 1 hdc in each dc around. Join with sl st to first hdc. (40 hdc)
- Fasten off and change to white for the background.
Part 3: Square the Circle (Making the Square)
- Round 7: With white, join with sl st in any st. Ch 3 (counts as dc), dc in next 7 sts, (corner) (2 tr, ch 3, 2 tr) in next st, *dc in next 10 sts, (2 tr, ch 3, 2 tr) in next st*; repeat from * to * twice more, dc in remaining 2 sts. Join to ch 3. (Each side has 12 dc/tr, each corner has ch-3)
- Round 8: Ch 3, *dc in each st to corner ch-3 sp, (2 dc, ch 2, 2 dc) in ch-3 space (corner)*; repeat from * to * 3 more times, dc in any remaining sts. Join to ch 3. (16 dc per side, 4 corners)
- Round 9: Ch 1, sc in each st to corner, (2 sc, ch 2, 2 sc) in each ch-2 corner space; repeat around. Join. (20 sc per side, 4 corners)
Fasten off, weave in ends. Block square to shape (see below).
Part 4: Assembly – Joining Squares
Lay out all finished and blocked squares in your desired arrangement. For a seamless look, use the join-as-you-go slip stitch method:
- Holding two motifs with RS facing out, work with white yarn and sl st through both back loops of corresponding stitches on two squares. Continue across sides to connect.
- Repeat for all rows and columns, joining squares as you go for a neat, flat seam.
Alternatively, use whipstitch or your preferred joining method.
Part 5: Blanket Border
After joining, add a simple border in white (or blue for contrast):
- Round 1: With RS facing, join white in any ch-2 corner space. Ch 1, (sc, ch 2, sc) in each corner, sc in each st and each join seam along sides. Join with sl st to first sc.
- Round 2–3: Repeat as desired, working (sc, ch 2, sc) in each corner. For a wider border, add additional rounds, or switch to hdc or dc for extra visual interest.
- Fasten off and weave in all ends.
Optional: Matching Pillow Covers
Join two finished and blocked squares on three sides (RS together, using slip stitch or whipstitch), turn RS out, insert pillow form, and close the fourth side with invisible seaming.
Assembly and Finishing
- After completing all squares, block each motif by pinning to a precise square shape and lightly steaming or wet-blocking.
- Join squares using your chosen method (slip stitch, whipstitch, or join-as-you-go).
- Weave in all yarn tails with a tapestry needle, burying ends securely in the reverse side of the motif.
- Spread the blanket flat and block the finished piece as needed to ensure perfectly aligned motifs and a crisp, professional appearance.
- For cushion covers, join motifs on three sides, stuff with a pillow insert, then seam the remaining edge.
Customization Ideas
- Try different color palettes—sunset shades, greens and yellows, pastels, deep jewel tones, or a monochromatic look.
- Use softer or chunkier yarn for larger floor throws or baby blankets.
- Make matching cushion covers, wall hangings, or even bag panels from individual squares.
- Alternate center motif colors for a patchwork effect.
- Add simple or elaborate borders in alternate colors to frame your blanket.
- Combine small and large squares for a modern composition.
Troubleshooting Tips
- If squares are curling, gently block them after finishing.
- Uneven edges may be caused by inconsistent tension—be mindful of yarn grip and check size consistency as you work.
- If squares are too big or small, adjust hook size or tension.
- To prevent loose color changes, always join new colors with a sl st, pull yarn snug, and securely weave in ends.
- If motifs gap at the join, use the closest matching join method or reinforce seams with a second pass.
- Make sure to count your stitches on each round for uniform squares.
Care Instructions
Hand wash or machine wash on gentle with cool water and mild detergent. Lay flat to dry to avoid stretching. If yarn is machine-washable acrylic or cotton, tumble dry on low if desired. Do not bleach. Store flat when not in use.
Final Notes
Take time to count stitches at the end of each round for every motif to ensure your squares remain neat and consistent. If your tension varies, lightly block squares for uniformity before joining. Adjust motif sizes or color orders as desired to reflect your personal style. Refer to images for assembly and visual inspiration as you work, and enjoy watching your beautiful, retro-inspired blanket come to life, square by square.
