This can really help a lot because it totally takes color out of the equation and lets you focus on value.
Both of these sets of fabric would work, but I ended up going with the last set because I felt the lighter rings in the first one made it look a bit lighter than I wanted.
Doesn't the black and white help you see the value better?
To make this block you will need a 2 x 15 inch strip of yellow and a 2 x 15 inch strip of medium blue, a 2 x 17 inch strip of light blue and a 2 x 17 inch strip of dark blue, and a 3 1/2 inch square of dark blue.
Sew the yellow strip to the medium blue strip and sub-cut into four 3 1/2 inch squares.
Sew the light blue and dark blue strips together and make four 3 1/2 inch four-patch blocks.
Arrange your units like this:
Then sew your block:
It's a simple block, but I love the way the values in the colors work in this. Come back next Monday for another block using four patch units.