In descriptive terms, violet is tinged with blue; purple is tinged with red.
Let’s try to identify what is a suitable colour for Lenten vestments. The Season of Lent is penitential and its vestments ought to be distinguished by being sombre. The purple of bishops, however, is intended to be a mark of their rank, and is derived from the use (by the ancient Romans) of purple robes to denote dignity, prestige and royalty. Consequently, Roman purple or fuchsia is not intended to be penitential.
Would the darker colour, then, violet (closer to indigo) be correct? Although the use of dark violet is now widespread, its development for liturgical use dates from the 19th century. Furthermore, such a colour was not used in Rome for sacred vestments until much more recently.

















