Chakra: According to most sources, indigo is associated with the third eye chakra, also called the Brow or Ajna chakra. On a personal level, I’ve always associated the third eye chakra with royal blue, not indigo. I know the colours are close, but this is just me.
Day: Saturday
Planet: Saturn
Zodiac: Capricorn
Indigo has become a bit of a buzzword within New Age groups within the last generation, due to the “Indigo Children” claims of Nancy Ann Tappe and Lee Carol. I find that the criteria of what makes an indigo child are much too vague, and I don’t hold them to much faith. I will say this though: kids are more aware with the world around them. Let’s be honest, a lot of the things kids experience is brand new, so of course they are very in-tune with the world around them.
I’m not necessarily saying that “indigo children” don’t exist, what I’m saying is that some of the proponents of indigo children simply what their child to extra special, or to give an excuse to a disorder like ADD/ADHD.
Anyway, I guess what I’m saying is that I’m very skeptical of the indigo children.

The rest of this is about the colour itself.

Indigo has been linked with spirituality. In fact, if I had to sum up the entire colour in one word, I would use “spirituality”. The colour is used in magic to increase occult wisdom and knowledge. This fits in aptly with the idea that the colour is linked to the third eye chakra, which is considered to be the spiritual centre. Indigo is also used to aid in spiritual communication, meaning that if one is engaged in a séance, indigo candles may help. Indigo candles are also used to help establish meditative states. I’ve talked to a lot of people who have issues meditating, and indigo candles are said to help calm the mind and prepare it for a meditation.

Indigo is said to be a colour associated with the Samhain, though I’ve only ever found one reference to that. I suppose the association comes from indigo’s association with ancient wisdom and the “thinning of the veil” (as it were), which are also associated with Samhain.

In a more practical sense, indigo is the colour you should use if you want to stop gossip or lies. Indigo is hailed as a colour that can balance karma. Indigo is also said to aid one in healing from emotional pain. -----
The Indigo Aura

The qualities of an indigo aura tie in a lot with spirituality, clairvoyance, artistic abilities and wisdom. I think this puts a lot of people off because it’s simply an adult version of the “indigo children”.

Luckily, there are some associations with indigo that are more “everyday”. Many people with an indigo aura are good at being calm and remaining dignified when bad things happen.