Is Indigo a Colour of the rainbow?

Related questions

1. What color is vintage indigo?
2. Where does Indigo grow?
3. What are the 6 tertiary colors?
4. Is Violet darker than purple?
5. What is special services Redc in indigo?
6. Where does the Colour Indigo come from?
7. What type of dye is Indigo?
8. What emotion is the color indigo?
9. What is the darkest shade of purple called?
10. Can I grow indigo?

Tags

1. #three
2. #orange
3. #colours
4. #violet
5. #yellow
6. #memorize
7. #today
8. #schoolchildren
9. #representation
10. #still
11. #indigo
12. #seven
13. #eschews
14. #leaving
15. #order
16. #primary
17. #rainbow
18. #vanished
19. #pride
20. #green
21. #secondary