how to give color to an object in unity code example

Example 1: unity change text color

// To change the color of a text, see below
GameObject.GetComponent<Text>().color = Color.black;

Example 2: how to change the color of an object in unity c# rgb

void Update ()
             {                         
               if(Input.GetKeyDown(KeyCode.R))
               {                                 
                 gameObject.GetComponent<Renderer>().material.color = new Color(233, 79, 55);
               }             
             }