Scarlet Delirium is a job ability from Final Fantasy XI. It can be obtained by Dark Knights at level 95. It has a duration of 3:00 and a recast time of 3:00. When used, it boosts the Dark Knight's attack and magic in proportion to damage the character has sustained.
Scarlet is a bright red with a slight orange tinge. Scarlet and other bright shades of red are associated with courage, force, passion, heat, and joy. In the Roman Catholic Church, scarlet is worn by a cardinal, and is associated with the blood of Christ and the Christian martyrs, and with sacrifice. Scarlet is also often associated with immorality and sin, particularly prostitution or adultery, largely because of a passage referring to "The Great Harlot", "dressed in purple and scarlet", in the Bible.