Ok first of all, with those dimensions your quilt will be off center. I personally wouldn't have any problem with that, but just thought I'd point that out.

I drew it up in EQ. Per the fabric requirements printed for this quilt, the purple would require 4 5/8 yards (assuming 40" wide fabric), which you then divide by 4 because you want to use 4 colors. EQ is notorious for over-estimating yardage, but I always figure it's better to go over than under. If I were making this quilt, I'd get 1.25 yards of each color.

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p.s. Here's a pic of a very similar quilt (LOVE this one!) and it's off center. Just to show you it can be done very nicely.

http://freshlypieced.blogspot.com/20...-and-done.html

I get 4.583 yds for the white and 1.222 yds for each color doing it with pure math, so EQ didn't add much at all, Peckish. Personally, I'd bump them both up a bit. There's a lot 'left over', too bad it's too narrow.

I like the quilt, colors and pattern. I don't care for the off center one in the link, it would drive me crazy (not far to drive). Just my taste. I always buy more, scraps are great.

I used EQ7, maybe they tweaked the formula with this release to make it more accurate! Yay!

Oh, thank you so much ladies. This quilt is for my niece and she actually wants it very off center. She is a graphic designer and loves modern quilts. She wants it in all greys with a very strong contrast. Her mom is going to have it quilted as a Christmas present. I'll post pics as soon as it's done.

I found another pretty one done in fall colors. It's a free pattern from rjrfabrics.com but only 56x70 in size