Unity - Scripting API:

public function ToString(): string;

public string ToString();

public function ToString(format: string): string;

public string ToString(string format);

Parameters

Returns a nicely formatted string of this color.

print(Color.white);

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Example() {
        print(Color.white);
    }
}