Blue is associated with the Throat Chakra. It is said to enhance communication skills, increase will power and aid artistic expression. Blue is a calming color that lowers blood pressure, lessens insomnia and eases anxiety.
Vishuddha (also Vishuddhi) may be understood as relating to communication and growth through expression. This chakra is paralleled to the thyroid, a gland that is also in the throat and which produces thyroid hormone, responsible for growth and maturation. Symbolised by a lotus with sixteen petals. Vishudda is characterized by the color light or pale blue, or turquoise. It governs such issues as self-expression and communication, as discussed above. Physically, Vishuddha governs communication, emotionally it governs independence, mentally it governs fluent thought, and spiritually, it governs a sense of security.