Preheat your oven to 350°F (175°C) and grease your cake pans.
In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Mix in the vanilla extract and cocoa powder until combined.
In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
Alternately add the dry ingredients and buttermilk to the butter mixture, starting and ending with the flour.
Add pink food coloring until the desired shade is achieved.
Divide the batter evenly between the prepared pans.
Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cakes to cool in the pans for 10 minutes before transferring them to a wire rack.
Once cooled completely, frost with your favorite cream cheese frosting.