The Spanish word 'azulón' meaning 'deep blue' has a fascinating journey that starts in ancient Sanskrit. It comes from the Sanskrit word 'rajavarta', meaning 'king's curl', which referred to the precious stone lapis lazuli. This term made its way through Persian as 'lažvard' and then into Arabic as 'lāzaward', both maintaining the meaning of 'lapis lazuli'. The word then evolved in Hispano-Arabic to 'lazawárd' with the meaning shifting to simply 'blue', before becoming 'azul' in Spanish.

The modern Spanish word 'azulón' adds the augmentative suffix '-ón' to 'azul', intensifying the meaning to indicate a deeper or stronger shade of blue.

The most obvious related Spanish word is the much more common 'azul', simply meaning 'blue'. This is the base word from which 'azulón' is derived. Other related Spanish words include 'azulado' (bluish), 'azulejo' (blue tile), and 'azulear' (to turn blue).

English speakers might recognize this connection in the word 'azure', which also comes from the same Arabic root through Old French. 'Azure' refers to the bright, sky-blue color and is often used in poetic or formal contexts. The word 'lazuli' in 'lapis lazuli', the deep blue semiprecious stone, also shares this etymology, preserving more of the original Arabic form.