273 Indigo Cologne by Fred Hayman, Unlike many fragrances for men, 273 indigo combines a variety of unique scents to create a fresh, masculine aroma. The base notes of this cologne are a mixture of vanilla, musk and guaiac wood with transitional notes of sandalwood and vetiver. At the top of the cologne, green citrusy notes of lavender and bergamot make this fragrance suitable for all seasons.