Half-square Triangle Quilt and Coordinating Pillow

When I stumbled upon Angela Walters’ Midnight Quilt Show two years ago, I instantly fell in love with one of the quilts she made called the Color Crystals Quilt. She made a massive King-size version that had 1100 half-square triangles! How awesome and crazy is that?! I knew I wanted to replicate some aspects of the quilt on a smaller scale, so I decided to focus on the main design to make a throw quilt. For this project, I loosely followed along with Angela’s YouTube video. If you are interested in giving the King-size version a try, definitely check out the full tutorial on Bluprint. For a fee, Bluprint offers the quilt kit that includes the fabric and PDF instructions with quilt design, but does not include the backing fabric and thread. For this project, I opted for solid prints, whereas the original uses a beautiful ombre print. Overall the fabric and materials cost me less than $50.

FABRIC USED: 1 yard purple solid, 1 yard lavender solid, 1 yard royal blue solid, 1 yard mint green solid, 1 yard light blue solid, 1 yard white solid, 1 yard turquoise solid, 1/2 yard blue batik, and 5 1/2 yards of backing fabric in a honeycomb print, cotton quilt batting, pillow stuffing

TOOLS USED: Sewing machine, large self-healing cutting mat, 3″ X 18” ruler, fabric chalk, cotton thread, rotary cutter, fabric scissors, sewing clips, sewing pins, iron, ironing board, manual bias tape maker, quilt basting spray


I began by cutting each solid fabric into 2.5″ squares. Once my squares were cut, I selected two colors that closely matched the Color Crystals quilt in order to make the half-square triangles.

I made the half-square triangles by placing the royal blue and turquoise fabric right sides together drawing a line from one point to the other and sewing on each side of the drawn line. Afterward, I cut the square in the middle to get two half-square triangles. Next, I used my fabric starch spray to lightly spritz the fabric and press it open with my travel iron. I also repeated this same process for the white and lavender half-square triangles.

Each of the royal blue and turquoise blocks has 16 half square triangles and each of the white and lavender blocks has 8 half square triangles. I made four rows alternating between the blue/turquoise and white/lavender to mimic the Color Crystals quilt design. There are a total of 144 half-square triangles of the royal blue and turquoise, 48 half-square triangles of the royal blue and light blue and 96 half-square triangles of the lavender and white.

Once all of the half-square triangles were made, I began constructing the pieces together. Again, I encourage you to check out Angela Walter’s YouTube video to visually see how to piece together, but here is my version.

Once all four rows were complete, I stitched the rows together using 1/4″ seam allowance. Then, I decided to add a top and bottom border of larger half-square triangles, which I cut my fabric 10″ x 10″ and used the same technique above. In between the larger half-square triangles, I placed solid squares measuring 10″ x 10″ to make the border.

I made my quilt sandwich by placing the backing fabric wrong side up, the batting in the middle and my quilt top (right side facing up) together. Instead of using safety pins to hold everything together, I used basting spray. I kept the quilting basic by sewing diagonal lines to make a criss-cross pattern. Once the quilting was done, I began making bias strips using my manual bias tape maker.

Before sewing the bias strips onto the quilt, I used my 3″ x 18″ ruler to cut the edges of the quilt to make sure everything was even. When sewing on the bias tape, I always use Jenny Doan’s technique, but feel free to use a technique that works best for you! Here is the final result!

Coordinating Pillow

With the extra backing fabric, I also made a coordinating oversized pillow by cutting two squares that were 20″ x 20″ and two squares of batting that were 22″ x 22″ and used the same criss-cross quilting pattern. Then, I sewed all of the edges together leaving about 4″ opening in order to add the pillow stuffing. Finally, I hand stitched the opening closed.


One Reply to “Half-square Triangle Quilt and Coordinating Pillow”

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