The best replacement for indigo is violet.

The best alternatives to indigo are rated as following:
★★★★★  violet
★★  purple
★★  blue
★★  crystal
★  sativa
★  woad
★  spicejet
★  kepler
★  igen
★  chapters
★  navy blue
★  isy
★  indigo carmine
★  logan
★  scio
  juno
  anil
  india
  yafray
  blue ray
  spicejet which is better
  vray
  azure
  xerox
  indigo cs
  jet airways
  starseed
  kingfisher
  henna
  indica
  buxus
  air india
  kerkythea
  go air
  maruti esteem
  nexpress

Your alternative for indigo is not listed? Suggest!
Speaking about indigo, one probably shouldn't forget about henna.

Other search terms related to indigo and their ratings are:
★★★★★ henna
You have in mind a companion for indigo and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of indigo in all years. Click on graph for more.
indigo
violet
purple