That’s a lovely and colorful crochet motif, perfect for a coaster. I want to show you on how to make a Crochet Coaster Motif Pattern. It looks like a granny square variant with front post treble crochet stitches (FPtr) for the long colored lines. Here’s a step-by-step written pattern you can follow:

🌸 Crochet Coaster Motif Pattern
Materials:
- 4-5 colors of DK or worsted weight yarn (as in your image: white, pink, yellow, purple, light blue)
- 4.0 mm crochet hook
- Scissors and yarn needle
✨ Abbreviations (US Terms)
- ch: chain
- sl st: slip stitch
- dc: double crochet
- tr: treble crochet
- FPtr: front post treble crochet
- st(s): stitch(es)
🧶 Instructions
Center Ring:
- With white yarn, make a magic ring.
- Ch 3 (counts as dc), work 11 dc into ring. Join with sl st to top of ch-3. (12 sts)

Round 1:
- Ch 3 (counts as dc), 1 dc in same st, ch 2.
- 2 dc in next st, ch 2 — repeat 3 more times (for a total of 4 corners).
- Join with sl st to top of ch-3. Fasten off.

Round 2 (Adding Color Lines):
- Attach color yarn in any ch-2 corner space.
- Ch 3 (counts as dc), 1 dc in same space, ch 2, 2 dc in same space.
- [FPtr around post of dc in previous round, skip 1 st, dc in next 2 sts] across side.
- At the corner: 2 dc, ch 2, 2 dc.
- Repeat steps 3–4 around.
- Join with sl st, fasten off.
Repeat Round 2 with a new color for each side segment.
Optional Border:
- After completing desired rounds, use a neutral or standout color (as in your image: light purple).
- Work a round of sc evenly around, with (sc, ch 2, sc) in each corner.

✨ Notes:
- The front post treble crochet stitches create those long raised lines.
- You can adjust the number of rounds for size.
- Always finish off each color and join new one in any ch-2 corner space.

Video tutorial : How to make crochet coaster motif pattern