What Is Color Pooling?
Color pooling (also called planned pooling) is a technique that exploits the repeating color sequence in variegated yarn to create geometric patterns — typically argyle diamonds or plaid-like grids — from a single ball of multicolored yarn.
The secret is matching your stitch count to the yarn's color repeat length. When the number of stitches per row equals the number of stitches in one complete color cycle, each color stacks directly above itself, forming vertical columns instead of diagonal stripes.
The result looks like you used multiple colors and an advanced technique, but it's actually a single yarn and a basic stitch.
How to Measure Your Yarn's Color Repeat
Work a swatch of at least 20 stitches in the stitch you plan to use (usually moss stitch or single crochet). As you work, count exactly how many stitches each color section lasts before changing to the next color.
Write down every section: Color A = 4 stitches, Color B = 3 stitches, Color C = 4 stitches, Color D = 3 stitches. The total (in this example, 14) is your color repeat length.
Accuracy is critical. Even being off by one stitch will cause the colors to shift and the pattern won't pool. Measure across several repeats to make sure the color sections are consistent.
Some yarns have very consistent repeats (great for pooling). Others vary slightly from repeat to repeat (harder to pool). Yarns specifically marketed for pooling tend to be very consistent.
The Magic Number: Your Foundation Chain
Your foundation chain should equal the total stitch count of one complete color repeat. Using the example above: chain 14 (plus any chains needed for turning, depending on your stitch).
If pooling doesn't align perfectly, try adding or subtracting 1–2 chains. Sometimes the turning chain or edge stitches shift the alignment slightly. Small adjustments can make the difference between a jumbled mess and perfect columns.
This is why our Color Pooling Calculator includes adjust buttons (±1 and ±2). Enter your color sections, and the preview instantly shows whether the colors align. Adjust until you see vertical columns.
Best Stitches for Pooling
Moss stitch (also called linen stitch or granite stitch) is the most popular for pooling because each stitch sits directly above the stitch two rows below, creating clean stacking. The technique: SC in next stitch, CH 1, skip 1, repeat.
Single crochet also works well but can create a denser fabric. It's simpler than moss stitch, making it a good starting point for pooling beginners.
Garter stitch works for knitting pooling. The texture of garter stitch helps hide any slight misalignments.
Hook or needle size affects pooling. A larger hook means each stitch uses more yarn, potentially pushing colors out of alignment. If pooling worked in your swatch but not your project, try matching your swatch's exact tension.