This blanket uses Bernat Blanket Perfect Phasing, and you can see four strips make up this 36" x 51" long blanket. The strategy of putting this together gives the faded illusion of the colours, creating a chevron look. This is the Crochet Corner to Corner Chevron with Perfect Phasing pattern.
You can use all of the same colours if you want to, and without my tutorial, I will show you how to cheat this without sewing the panels together. However, I recommend doing only 32 boxes in length, not 34, so you have extra yarn for my attaching method.
You can do this similar concept by joining without sewing with my Crochet Log Cabin Blanket. There's also a free tutorial to help you.