Indigo
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Indigo is a term used for a number of hues in the region of blue. The word comes from the ancient dye of the same name. The term "indigo" can refer to the color of the dye, various colors of fabric dy
Indian indigo dye lump
Passerina cyanea Sam Smith Park Toronto
Lactarius indigo Fr 939963
1923ca Quarter anna Bundi indigo SG26a Mi 18
Indigo dye
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Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye obtained from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria. Dye-bearin
Indigo
…Indigo is a term used for a number of hues in the region of blue. The word comes from the ancient dye of the same name. The term "indigo" can refer to the color of the dye, various colors of fabric dyed with indigo dye, a spectral color, one of the seven colors of the…
Cake of indigo, c. 2 centimetres (1 in)
Indigo, historical dye collection of the Technical University of Dresden, Germany
![Indigo factory at Allahabad, India, drawn by Émile Thérond [fr], 19th century](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Ridpath%27s_history_of_the_world%3B_being_an_account_of_the_ethnic_origin%2C_primitive_estate%2C_early_migrations%2C_social_conditions_and_present_promise_of_the_principal_families_of_men_%281897%29_%2814597001160%29.jpg/500px-Ridpath%27s_history_of_the_world%3B_being_an_account_of_the_ethnic_origin%2C_primitive_estate%2C_early_migrations%2C_social_conditions_and_present_promise_of_the_principal_families_of_men_%281897%29_%2814597001160%29.jpg)
Indigo factory at Allahabad, India, drawn by Émile Thérond [fr], 19th century