Arabic Calligraphy Thuluth Style:

(Arabic meaning: “one-third”) Thuluth script was first formulated in the 7th century at the time of the Umayyad caliphate, but it did not progress entirely until the late 9th century.

Written on the principle that one-third of each letter slopes. It is a large and elegant, cursive script, used in medieval times on mosque decorations. It took on some of the functions of the early Kūfic script, it was used to write headings on religious inscriptions, and princely titles and epigraphs. It was also used for many of the large copies of the Qurʾān produced from the 13th century.

Thuluth is one of the most used Arabic Calligraphy styles for Classic Logos.