Place each candy melt color in a separate microwave safe bowl. Melt according to package directions.
Line a cookie sheet with wax paper or parchment paper.
Spread the melted blue candy melts in a large rectangle on the prepared cookie sheet. Drizzle with white and pink and swirl as desired. Top with sprinkles. Chill to set. Break into pieces and serve.
Store in an airtight container in the refrigerator for up to 1 month.