Richard Diebenkorn: 1962 Reclining Nude—Pink Stripe.
I've been to the Met to see this painting three times in the last seven days. It's stuck in among a bunch of Philip Pearlsteins and Alex Katzes and a couple of Alice Neels in some windowless room in the not quite bowels of the museum. It's small, but in person the color is intense - her skin is almost blueish, with streaks of deep teal, the darks are inkier and the pink stripe is somewhere between sunset and shocking.
One of several things I wish the Met would loan me for a while.