The pattern is Rib on the Side from Fiber Trends. They are designed to be fraternal. If you wanted them to match, you would have to stripe the feet in order not have to use three skeins of yarn. I had an extremely limited amoung of each yarn left.
The yarn is Apple Laine in Royal Blue and Hey Baby!
And then there are Broken Rib
The yarn for those orange/pink broken rib socks is Dicentra Designs in Sunset. At 375 yards for 4 oz, it is slightly heavier than the traditional sock weight yarns. Composition is 50% wool, 50% alpaca. I am not going to be wearing these until the weather gets cold.
Photo taken in the MWR builing. Boring. Echos. Can't hear yourself think, even with headphones!