Khatas come in five main colours, each with its own symbolism.
White represents purity, auspiciousness, sincerity and kindness. White khatas are the most popular colour and are suitable for all occasions.
Yellow represents increase and growth. Yellow khatas are typically offered to high lamas, spiritual teachers, and to wealth deities such as Dzambala and Namtose.
Red represents control and wrath as well as love and compassion. Red khatas are often offered to wrathful deities and Dharma protectors.
Green represents the swift fulfilment of wishes. Green khatas typically symbolise a wish for peace and protection from harm.
Blue represents knowledge and wisdom. Blue khatas are particularly popular in Mongolia, as they are said to represent the sky.
On very special occasions or when meeting a highly attained spiritual being, khatas in all five colours are offered at the same time.