The short answer is no. Raúl Juliá (1940–1994) was a proud Puerto Rican, born in San Juan, but he was not white by conventional racial classifications, either in Puerto Rico or the United States.
Juliá had a distinctively dark complexion and Afro-Latino features. Throughout his career, particularly in the US theater and film industry, he was frequently described by peers and the press as a "Black Puerto Rican" or Afro-Puerto Rican. He navigated an industry that often typecast Latino actors, breaking barriers with his immense talent in roles ranging from Shakespeare (Joseph Papp's Public Theater) to iconic film roles like Gomez Addams (The Addams Family, Addams Family Values) and Valentin Arregui (Kiss of the Spider Woman).
His racial identity was part of his lived experience. In Puerto Rico, where racial identity is often fluid and based on a spectrum of color (trigueño, moreno, negro) rather than the rigid binary historically found in the US, Juliá would likely have been identified as moreno or negro. He embraced his heritage fully, advocating for Latino representation and never shying away from his African ancestry.