Big Ripple Rainbow Blanket: Free Knitting Pattern for a Stunning Colorful Throw
There is something deeply satisfying about a blanket that does double duty — one that wraps you in warmth while also brightening up the room just by existing. The Big Ripple Rainbow Blanket is exactly that kind of project. With its sweeping chevron waves and bold spectrum of color, this free knitting pattern creates a throw that feels like it was made to drape over the back of a couch, hang on a guest room wall, or be gifted to someone who deserves something truly beautiful. Whether you are a confident intermediate knitter looking for a meditative weekend project or an adventurous beginner ready to level up your skills, this pattern delivers.
In this post, you will find everything you need to get started, including yarn suggestions, needle recommendations, a complete written pattern, stitch counts, tips for working with multiple colors, and advice for finishing your blanket beautifully. Let’s dive in.
Why You Will Love This Pattern
The ripple or chevron stitch has been a beloved knitting and crochet technique for generations, and for good reason. The rhythmic increase-and-decrease structure creates those gorgeous undulating waves that look incredibly complex but are actually quite logical once you understand the repeat. Once you get a few rows under your belt, your hands will know exactly what to do next, making this one of those patterns you can work on while watching a movie or sitting with friends.
What sets the Big Ripple Rainbow Blanket apart from other chevron projects is its scale and its color approach. This is not a delicate baby blanket with small, tight waves. The ripples here are generous and bold, creating wide arcs of color that really let each yarn shade breathe and shine. By working through the colors of the rainbow — red, orange, yellow, green, blue, indigo, and violet — you end up with a blanket that tells a visual story from one end to the other. You can follow the traditional rainbow order exactly or mix and match shades to suit your home’s palette.
Materials You Will Need
Before casting on, gather everything you need so your project flows without interruption.
Yarn: You will need a medium weight yarn, commonly labeled as worsted weight or size 4. For this blanket, plan on approximately 200 to 250 yards per color if you are working seven colors in the rainbow sequence. A good total yardage target is around 1,600 to 1,800 yards for a generous lap blanket or around 2,400 yards for a full throw. Acrylic yarn works beautifully for this project because it is machine washable, comes in an enormous range of vibrant colors, and holds its shape well after blocking. That said, any worsted weight fiber you love will work — wool gives a beautiful drape and loft, cotton is lovely for warmer climates, and wool-acrylic blends offer a nice middle ground.
For the rainbow colorway, you might choose something like a true red, a bright orange, a sunny yellow, a fresh grass green, a sky blue, a deep indigo or cobalt, and a rich violet or purple. You do not need to stick rigidly to these hues. Coral instead of red, mint instead of green, lavender instead of violet — all of these work wonderfully and can make your blanket feel more personal.
Needles: Use US size 8 (5mm) circular knitting needles, at least 32 inches long. Even though you are knitting flat (back and forth, not in the round), the long circular needle accommodates all those stitches comfortably without crowding. If you prefer straight needles and have a very long pair, those can work too, but most knitters find the circular needle more comfortable for wide projects.
Other supplies: A tapestry needle for weaving in ends, scissors, a measuring tape, stitch markers (optional but helpful for keeping track of pattern repeats), and a row counter if you find one useful.
Gauge: Approximately 18 stitches and 24 rows equals 4 inches in stockinette stitch on US size 8 needles. For a ripple pattern, gauge is somewhat flexible since the waves naturally stretch and compress, but getting close to this gauge will help you achieve a finished blanket in the size range described below.
Finished Size
The pattern as written produces a blanket approximately 48 inches wide and 56 inches long, which is a generous lap blanket or a cozy throw. You can easily adjust the width by adding or subtracting multiples of the stitch repeat (which is a multiple of 12 plus 3 stitches) and adjust the length by working more or fewer color repeats.
Abbreviations and Stitch Guide
k — knit
p — purl
k2tog — knit two stitches together (decrease leaning right)
ssk — slip, slip, knit (decrease leaning left)
kfb — knit into the front and back of the stitch (increase)
yo — yarn over
rep — repeat
RS — right side
WS — wrong side
CO — cast on
BO — bind off
Pattern Notes
This blanket is worked flat from one short end to the other. The ripple effect is created by a series of double increases at the peaks of each wave and double decreases at the valleys. Once you understand this logic — increase at the top, decrease at the bottom — the pattern becomes very intuitive.
Color changes happen every 8 rows, which creates visible stripes of waves as you move through the rainbow. You do not need to cut the yarn at every color change if colors are being picked up again later, though with a seven-color rainbow sequence, most knitters find it cleanest to cut and rejoin. Keep tails long enough to weave in securely.
The right side of the blanket is the visually dominant side where the increases create a clean V shape at the peaks. Both sides are attractive, so the blanket is technically reversible, though the right side has slightly crisper definition.
The Big Ripple Rainbow Blanket Free Knitting Pattern
Cast on: Using your first color (Red), cast on 219 stitches. This number is based on 18 full ripple repeats plus the edge stitches. Each repeat is 12 stitches, and you have 3 additional stitches for balance. The formula is (18 x 12) + 3 = 219.
Setup Row (WS): Purl across all stitches.
Ripple Pattern:
Row 1 (RS): K1, k1, k2tog, k3, kfb, k1, kfb, k3, ssk; rep from to last 2 sts, k2.
Row 2 (WS): K1, purl to last stitch, k1.
Repeat Rows 1 and 2 for the ripple pattern. The k1 at the beginning and end of every row creates a clean garter stitch edge that does not curl and frames the blanket neatly.
Color Sequence:
Work 8 rows (4 complete ripple repeats, meaning 4 RS rows and 4 WS rows) in each color before switching to the next. The color sequence is as follows: Red, Orange, Yellow, Green, Blue, Indigo, Violet.
After completing all seven colors (56 rows total), you have completed one full rainbow band. For the lap blanket length of approximately 56 inches, work approximately 6 full rainbow bands, then work an additional 8 rows in Red to bring the blanket back to its starting color and create a balanced appearance. If you want a shorter blanket, work 4 or 5 rainbow bands. For a longer blanket or bed throw, work 8 or more bands.
Bind off: After completing your final color stripe, bind off all stitches on a RS row using a standard knit bind off. To keep the bind off edge from pulling too tight (which can distort the ripple), try binding off loosely or going up a needle size for this final row.
Stitch Count Check
Because the ripple pattern uses paired increases and decreases, your stitch count should remain consistent throughout. After every RS row, you should still have 219 stitches. If your count is off, it almost always means a missed increase or decrease somewhere in the row. It can help to place a stitch marker after every 12-stitch repeat when you first begin so you can identify exactly where a mistake occurred.
Tips for Working With Multiple Colors
Working with seven colors across a large blanket does mean a lot of ends to weave in at the finish, but there are a few strategies that make this much more manageable.
As you finish each color stripe and before starting the next, consider weaving in the tail as you go rather than leaving it to the end. Thread your tapestry needle and weave the tail in on the wrong side through several stitches in different directions to secure it. Doing this continuously throughout the project means you will have very little finishing work left at the end.
If you are purchasing yarn specifically for this blanket, buy your colors all at once if possible. Dye lots can vary slightly between purchases, and while this is most noticeable in solid yarns, even subtle variations can create an unintentional effect in your color stripes. Having all your yarn from the same purchase removes this concern.
When joining a new color at the start of a RS row, leave a tail of about 6 inches, make a loose slip knot with the new yarn, and slide it onto your needle before removing your working needle from the last stitch of the previous row. Some knitters prefer to simply hold the new yarn alongside the old for the first couple of stitches and knit with both to anchor the join before dropping the old color. Either method works well.
Blocking Your Finished Blanket
Blocking transforms a knitted blanket from finished to polished. After you have woven in all your ends and your blanket is off the needles, wet blocking is the most effective approach for a piece this size.
Fill a bathtub or a large basin with cool water and submerge your blanket completely, gently pressing it down until fully saturated. Do not wring or twist the blanket — just let it soak for about 20 minutes. Then lift it carefully (it will be heavy when wet) and gently press out excess water without wringing. Roll the blanket in a large dry towel and press to absorb more moisture.
Lay the damp blanket flat on a clean surface — a carpeted floor works well for large pieces, covered with a towel or blocking mat. Use your hands to gently smooth the ripple waves into their natural shape, coaxing the peaks and valleys into even alignment. Pin the edges if you want a very crisp result, or simply smooth and let dry. Drying may take 24 to 48 hours depending on your yarn and environment.
Once dry, the blanket will have a noticeably more even, relaxed drape, and the rainbow stripes will look cleaner and more defined.
Customizing Your Rainbow Blanket
One of the greatest joys of a free pattern like this one is how easy it is to make it your own. Here are a few ways knitters often personalize this design.
Alternative color palettes: Instead of a traditional rainbow, try a sunset palette moving through peach, coral, burnt orange, terracotta, and deep burgundy. A cool ocean palette using white, pale aqua, seafoam, teal, deep blue, and navy creates a completely different mood. For a winter version, shades of cream, soft grey, icy blue, and silver make a sophisticated, cozy throw.
Changing the stripe width: The 8-row stripe described in this pattern creates medium-width color bands. For thinner, more tightly packed stripes, switch colors every 4 rows. For bold, dominant color blocks, stay with each color for 16 rows. Both variations change the overall visual effect significantly.
Adding a border: Once your blanket is complete, you can pick up stitches along the long edges and work a few rows of garter stitch in any color for a clean, finished border. A neutral color like cream or grey frames the rainbow beautifully without competing with it.
Making it smaller: This same pattern makes gorgeous baby blankets at a smaller scale. Cast on 111 stitches (9 repeats of 12, plus 3) and work 3 or 4 rainbow bands for a sweet baby throw.
Gifting and Display Ideas
The Big Ripple Rainbow Blanket makes one of the most cherished handmade gifts you can give. It is personal enough to feel meaningful but universal enough to suit almost any recipient. Consider gifting it to a new homeowner who just moved into their first apartment, a friend who has been going through a difficult year and could use a little color in their life, or a child who is old enough to appreciate a big, vibrant blanket made just for them.
If you are keeping it for yourself, this blanket looks stunning draped over the arm of a sofa or folded at the foot of a bed. Hung on a large wooden dowel as wall art, it becomes a genuine statement piece. The ripple pattern catches light beautifully and creates subtle texture shadows that make the blanket visually interesting even from across the room.
Skill Level and Time Investment
This pattern is rated as easy to intermediate. If you are comfortable with basic knit and purl stitches and have tried knitting two stitches together at least once, you have everything you technically need. The main thing that makes this intermediate rather than purely beginner is the rhythm of tracking increases and decreases across a wide row without losing count. After the first two or three rows, most knitters find their groove and the pattern flows naturally.
Time-wise, plan for approximately 30 to 40 hours of knitting for the full-size throw, depending on your pace. Spreading this across several weeks of evening knitting sessions is very manageable. Many knitters find they look forward to this project because the color changes every 8 rows provide a satisfying sense of progress — you can literally see the rainbow growing.
Final Thoughts
Knitting this blanket is not just about the finished object, though the finished object is undeniably wonderful. It is about the process of building something color by color, row by row, until a complete spectrum takes shape in your hands. There is something almost meditative about the ripple pattern — the steady rhythm of the increases and decreases, the way the waves build and resolve across each row. By the time you cast off that final stitch, you will have knitted a piece that carries real beauty and real intention.
Print this pattern out, save it to your favorites, or bookmark it for your next project queue. Share your finished blanket with the knitting community using the hashtag #bigrippleblankethttps and tag your fellow makers — seeing how different color choices transform the same structure is one of the most delightful parts of a pattern like this one.
Happy knitting, and may your ripples always be even.
