Preheat your oven to 350°F (175°C).
Prepare three 8-inch round cake pans by greasing and flouring them.
In a large bowl, cream together the softened butter and sugar until light and fluffy.
Add eggs one at a time, mixing well after each addition.
Mix in the buttermilk and vanilla extract until combined.
In a separate bowl, sift together the flour, cocoa powder, baking soda, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Add pink food coloring until the desired shade is achieved.
Pour the batter evenly into the prepared pans and smooth the tops.
Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.
Let the cakes cool in the pans for 10 minutes before transferring to a wire rack.
Once cooled, frost with your favorite cream cheese or buttercream frosting.