Changing color slowly

I’m trying to make a effect on screen. I want to make it that the color goes from black to white slowly. Like with Time.DeltaTime; How would i be able to do this.

void Update(){

	if(anotherScript.health < 100){
		
		  renderer.material.color = new Color (255,0,0); 

}

You can use Color.Lerp for this.