Second choice would be solid blue. Always have the shirt cleaned and pressed. Depending on the color of your suit, wear comfortable black, navy or dark gray. Never wear white socks. Leather shoes with laces are recommended.
Dark colors are best-stay away from white and tan.
Be sure your shoes are clean and polished. While ties do make an impression, you want to be viewed as a professional so a conservative, yet stylish, tie is recommended. Once you get the job, you can wear ties that make a statement about your individuality. Tie should be pressed, knotted neatly, and should match your suit and shirt. Proper length is to the top of your belt or pants.