An interesting vibrating centre combined with an easy 3-row repeating after the first section is done. This pattern will allow you to keep growing out the blanket to your preferred size if it is too small. 
 
The colouring of this yarn will not allow the colours to colour pool, and it turns out nice. The finished look reminded me of a blanket that I saw on a couch in a vintage-looking, authentic coffee shop. Based on the yarn's name, Jazzy, I thought this was a nice touch for a speakeasy-style setting for this blanket. 
 
This will allow crocheters who are in the easy stages to tempt them with some harder beginning rounds before easing off to do the remaining of the blanket 
 
Red Heart Super Saver Jazzy,  250 g/8.8 oz, 388 meters/424 yards
 
A = Dappled Deep - 2 Balls (Blue Tones)
B = Citrus Combo - 2 Balls (Yellow Tones)
 
Hook: 5.5 mm / I/9
Gauge: 13 sc and 14 rows = 4” [10 cm]
Measurements Approx 46” square.