The Blue Ajah of the Aes Sedai normally involve themselves with righteous causes and justice. They have the most extensive eyes-and-ears network, and enjoy the prestige of having the highest number of Amyrlin Seats raised from their Ajah. The Blue has been at odds with the Red Ajah for a millennium, and for a time were separate from the White Tower altogether. The head of the Blue Ajah is called the First Selector.
There is deep-seated animosity between the Blue and Red Ajahs. It began two thousand years ago when Tetsuan was deposed and stilled and replaced by an Amyrlin formerly of the Blue, and was ignited a thousand years later when Bonwhin Meraighdin was also deposed, stilled, and replaced by an Amyrlin raised from the Blue, the legendary Deane Aryman, the absolute archtype of a Blue sister, who holds a position similar to that of Rashima Kerenmosa of the Green Ajah. For the next one thousand years the lack of any Amyrlin Seats raised from the Red Ajah infuriated the Reds, and culminated in the deposing and stilling of Siuan Sanche and the raising of Elaida do Avriny a'Roihan. The entire Blue Ajah deserted the White Tower, along with sisters from the Brown, Gray, Green, Yellow and White Ajahs, and formed their own "Little Tower" in defiance of Siuan's treatment. With the raising of Egwene al'Vere to the Amyrlin Seat, the Blue Ajah has since returned to the Tower, but the relationship between the two Ajahs is still volatile.
The Blue Ajah is closely allied with the Green Ajah, which is a friendship that has continued for a millennium. On rare occasion, there is some struggle and tension between the two Ajahs, such as when the Green Sitters of the time suggested Moiraine Damodred be sentenced to farm work due to Siuan favouring her, but the friendship of the Blue and Green Ajahs is firm and assured.
The Brown Ajah will support the White over the Blue, but supports the Blue over the Yellow.
During the Aiel War the Blue Ajah's relationship with the White became strained, the reason for which was not known to the Blue Ajah. However their shared animosity toward the Red Ajah has kept the Blue and White's relationship from deteriorating.
Known traditions for members of the Blue Ajah:
- never wearing red inside the Tower, though red gemstones are allowed
- wearing all blue the first of each month
- wearing blue stockings when leaving Tar Valon
- refraining from marriage
- greeting the newest Blue sister with a kiss of welcome
- requiring the newly-raised Blue sister to bake a pie for the sixth member of the Blue to kiss her
An ancient tradition involved all newly-raised sisters (not just Blue) to walk to the halls of her Ajah clad only in her shawl, but this was abandoned a long time ago. All that remains of this custom is that the hallways of the Tower must be kept clear until the new Aes Sedai reaches the quarters of her Ajah.
When Siuan Sanche was deposed and stilled, and replaced by Elaida as Amyrlin Seat, the entire Blue Ajah fled and secretly organized the rebel faction of the Aes Sedai at Salidar in Altara. This exodus was later sealed when Elaida disbanded the Blue Ajah entirely. With the eventual reunification of the White Tower, the Blue Ajah was restored after all the rebel sisters apologized to Egwene for their actions.
All Ajahs have weaves known only to their members, and the Blue Ajah are no exception. There are two that are known so far. One makes insects gather and bite all at once, and one that is akin to Compulsion in that it uses Spirit and can make the person speak the truth, but does not actually force the person do anything if they are strong-willed enough.
The First Selector of the Blue Ajah is Lelaine Akashi. She is also a Sitter in the Hall of the Tower, along with Lyrelle. A third Blue Sitter, who is yet to be identified, was killed during the fighting that broke out when Siuan was deposed, to be replaced by Moria Karentanis in Salidar, who was in fact Black. It is unclear who replaced Moria in the newly united Hall.
List of current Blue sisters
- Adine Canford
- Anaiya (dead)
- Aeldene Stonebridge
- Aeldra Najaf
- Berylla Naron (also Black Ajah)
- Cabriana Mecandes
- Cetalia Delarme
- Kairen Stang
- Leane Sharif (changed to the Green Ajah)
- Lelaine Akashi
- Moiraine Damodred
- Moria Karentanis (also Black)
- Rafela Cindal (sworn to Rand al'Thor)
- Siuan Sanche