If you love eye-catching geometric textures and experimenting with color in your crochet, this project will capture your imagination. This pattern creates a fabric of stacked, overlapping fan or shell motifs that appear to interlock in perfect harmony. Each arch shows off bold, chunky stitches in alternating stripes of creamy ivory and caramel brown. The resulting visual: a rows-upon-rows arrangement of half-circle fans, pieced together so that each motif nestles into the gaps of the row below. The openwork is decorative without being overly lacy, and the dense stitches combine to form a soft but structured crochet textile.
This fabric makes an irresistible choice for cozy throw blankets, striking pillow covers, boho wall hangings, or even stylish scarves and bags. The rhythmic color changes and bold shapes create visual drama, while the open eyelets give enough movement for interesting light and shadow play. Crocheters will delight in watching the pattern develop and discovering just how transformative a simple motif can be. This project is a wonderful demonstration of the power of basic stitches combined creatively.
Project Overview
This pattern is made by working horizontal rows of half-circle fan shells. Each row alternates colors; the motifs are made individually and joined as you go, so there is no sewing together of motifs at the end. The fabric is constructed back and forth in rows, with each new shell being anchored into the spaces between the shells of the previous row. The initial foundation chain sets the width, and the project can be easily sized up or down. Edges may be left as-is for a decorative scalloped effect, or you can add an optional straight border at the end.
Skill Level
Advanced Beginner to Intermediate. The stitches themselves are simple (chains, double crochets, single crochets), but you’ll need to be comfortable counting stitches, working into chain spaces, and changing colors frequently. Some experience with motif placement and working in rows with non-rectangular edges (the fans create scallops) will be helpful.
Materials
- Worsted weight (category 4) yarn in two colors:
- Color A (Caramel Brown): Approx. 100g (180-200m/195-220yds) for a swatch approx. 30 x 30 cm (12 x 12 in). Adjust for finished size desired.
- Color B (Ivory/Light Cream): Approx. 100g (180-200m/195-220yds).
- 5 mm (H-8) crochet hook, or size needed for a fabric you like
- Tapestry needle (for weaving in ends)
- Sharp scissors
- Stitch markers (optional, to mark first and last shell or keep track of color changes)
Finished Size
The sample shown is approximately 30 cm x 30 cm (12 in x 12 in). To adjust the size, increase or decrease the number of starting chain multiples (see pattern details below). Each motif repeat is about 10 cm (4 in) wide; the height of each shell row (2 rows for one full repeat in both colors) is approx. 5 cm (2 in), depending on tension. Small gauge differences will slightly adjust your overall size.
Gauge
Gauge (unblocked): 1 motif (fan shell plus adjacent spaces) = approx. 10 cm/4 in wide and 5 cm/2 in high over 2 rows. Gauge is not critical; however, for home decor items (like blankets or pillow covers), consistent gauge makes for even motifs and clean joins.
Stitches and Abbreviations
- ch – chain
- sl st – slip stitch
- sc – single crochet
- dc – double crochet
- st(s) – stitch(es)
- sp(s) – space(s)
- rep – repeat
Important Pattern Notes
- Chains at the beginning of rows do NOT count as stitches unless otherwise specified.
- Work is made back and forth in rows.
- Always change color at the end of each row by finishing the last stitch with the new color.
- Work stitches into chain spaces, not individual chains, unless noted.
- The right side (RS) is the side facing you at the end of Row 1. For best appearance, carry yarn loosely up the side to minimize ends and bulk.
- Use stitch markers to help keep track of the first and last shell of a row, or to mark placement for motif starts.
Detailed Crochet Pattern
Part 1: Foundation Row
Using Color A (Caramel Brown), ch 37 (multiple of 12 + 1 for sample size; adjust as follows: (12 x number of motifs across) + 1).
Part 2: Row 1 – Shell Fans, Color A
- Dc in 4th ch from hook (skipped chains do not count as a st).
- In next ch, dc again. (This makes two dc in consecutive chains.)
- *Skip next 2 ch, in next ch work (7 dc) (this forms a fan shell).
- Skip next 2 ch, dc in next 2 ch.*
- Repeat from * to * across until 3 ch remain.
- Dc in each of last 2 ch. (This ensures both ends have a flat edge.)
- Turn (total: [number of shell repeats] shell fans).
Part 3: Row 2 – Contrast Shell Fans, Color B
- Join Color B. Ch 3 (does NOT count as a st), turn.
- Work [3 dc] into first dc of previous row (this fills between the shells).
- *Ch 2, sc into center dc of next 7-dc shell below, ch 2, work 7 dc into chain space between next two dc groups* (the space between 2-dc groups below).
- Repeat from * to * across.
- After working last 7-dc shell into final space, ch 2, sc in last dc of previous row.
- Turn.
Part 4: Row 3 – Overlapping Shell Fans, Color A
- Pick up Color A, ch 3 (does NOT count as stitch), turn.
- In first stitch, work 2 dc.
- *Skip to ch-2 space, work 7 dc. Skip to center of next shell (the sc), work 2 dc in this sc.*
- Repeat from * to * across; finish with dc in last st.
- Turn.
Part 5: Continue Pattern
Repeat Rows 2 and 3, alternating colors every row.
- Even-Numbered Rows (Color B): 3 dc into the first dc, then ch 2, sc into center stitch of next shell, ch 2, 7 dc into next space, across.
- Odd-Numbered Rows (Color A): 2 dc in first st, 7 dc in next ch space, 2 dc into next sc, across, ending with 1 dc in last st.
Helpful note: The key to keeping the arch pattern is always working 7 dc into the spaces below, aligning fans so they ‘nest’ into each other, and alternating the colors. Every new row’s shell should offset (overlap) the previous row’s shells by half a motif, so the fans are staggered.
Part 6: Optional Straight Border
If you wish to add a straight edge border:
- Join Color A (or B) at one end, work a row of sc or hdc evenly across the top and bottom edges, placing 2 sts in the tip of each fan and 1 st in each ‘dip’ or space between fans. For the side edges, work 1 st into the side of each row.
- Repeat for additional rounds as desired for thickness, always placing extra stitches in the corners for a neater finish.
- Fasten off and weave in ends.
Assembly and Finishing
- Because the motifs are joined as-you-go, there’s no final sewing but you should check edges and neaten up loose stitches.
- Weave in all yarn ends securely using a tapestry needle. To minimize bulk, try to weave within a single color section at a time.
- Gently block your finished fabric: soak in lukewarm water with gentle wool wash, press out water with a towel (do not wring), and shape the fabric flat, pinning out the arches on a blocking mat. Let dry completely for the openwork to look crisp and even.
- If needed, carefully tug at scallops to help them form uniform half circles.
Customization Ideas
- Experiment with more or fewer colors: use three shades in rotation for a gradient look, or go monochrome for subtle texture.
- Change yarn weight for different projects—use bulky yarn and a larger hook for instant baby blankets or soft rugs; use DK weight for scarves or lightweight throws.
- Make a single-row swatch and use as a retro geometric scarf or shawl section.
- Make several squares or strips, join together for a blanket, cushion cover, or table runner.
- Frame a single motif row as a boho wall hanging or use as a trim for home accessories.
- Add a simple slip-stitch or picot border in a contrasting color to make the arches pop even more.
Troubleshooting Tips
- Curling fabric: Try going up a hook size for looser tension, or block your work thoroughly.
- Uneven edges or wavy sides: Ensure your row starts and ends with the correct number of dc; consider adding a border for stability.
- Motifs too small/big: Adjust hook size, or add/subtract stitches in the foundation chain in multiples of 12 to fit desired width.
- Loose color changes: Always finish the last yarn-over of final stitch of the row with the new color; tug gently to tighten before turning.
- Uneven tension in shells: Make sure all dc are worked to the same height, and pause to gently stretch out each fan as you go.
- If motifs don’t nest as pictured: Double-check placement of shells and fans; each new shell row should sit between and above the shells in the row below.
Care Instructions
- Hand wash recommended for most worsted weight yarns (especially acrylic, wool, or blends) in cool or lukewarm water with mild soap.
- Rinse gently, press out excess water with a towel, and lay flat to dry.
- Avoid hanging to dry, as openwork motifs may distort.
- Light steam blocking can help keep the texture even, but avoid direct heat on synthetic fibers.
Final Notes
Take time to count stitches carefully, especially at the beginning and end of each row, to avoid subtle shifts in the motif placement. Adjust gauge and hook size as needed to match your desired drape and finished fabric size. Use the project image as a visual guide for fan placement and color progression, and let your creativity run wild with color combinations. Happy crocheting!