Alohomora

Alohomora, often dubbed the Thief's Pal, was an enchantment that opened items including doors or windows. Additionally, it was capable of opening doors that had been sealed by the Sealing Spell (Colloportus), and so served as its counter-charm. The Anti-Alohomora Charm may be used to prevent the Alohomora Charm from functioning on a locked target. Numerous publications had descriptions of this spell, such as the first issue of the Standard Handbook of Spells series, which contained a chapter on it, and a spell book located in the Hogwarts Library. This magic was also taught in the first year of Hogwarts of Witchcraft and Wizardry Charms class and became one of the first spells pupils learned.

Harry Potter pondered using this spell to release the cage of his beloved pigeon Hedwig at number 4 Privet Drive in the summer months of 1992, but decided against it since he was aware that juvenile magicians and wizards were not permitted to conduct witchcraft outside of Hogwarts.

The door holding the Philosopher's Stone remained impenetrable to the Unlocking Charm; it could only be opened with a winged key. A solitary gate inside the Department of Mysteries is also immune to this spell; it is supposed to lead to the chamber in which the Ministry of Magic conducts research on the nature of love in the Division of Mysteries.

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Effect: Unlocking things

Light color: Purple, yellow, blue, or invisible