Cách sử dụng
Indigo is a color, which is a deep shade of blue. You can use the word 'indigo' to describe a thing or an object which is blue but is darker or deeper in shade than the regular blue color. For example, you can describe a dress or a shirt as 'indigo' if it is deep blue in color. Indigo is also a dye which is obtained from plants, and this dye is used to color fabrics, clothes, and other materials.