Colour Index has emerged as the most authoritative way for searching your exact needs of Dyes and Pigments from available wide range of colors available today. Basically a compendium of dyes, as the chemical names can be confusing and complicated, the practice to use names that are descriptive has arisen.
Color index was prepared in U.K. by the Society of Dyers and Colorists, while in USA it was prepared by American Association of Textile Chemists and Colorists. With rise in the system of Color Indexing, many confusions that earlier were associated with naming and colors of Dyes as well as Pigments have been effectively sorted out.
In general terms, dye is referred by a simple name or common that can be easily comprehended by people who work with them. But here one issue arise that dyes may have names that are more than one. For example, basic fuchsia which earlier was known as magenta and light green that is popularly used to refer to dye methyl green. With some of these names being historical, there might be instances where for selling single compound, different manufacturers use different names so as to avoid issues related to copyright or trademarks.