In Chinese tradition, certain numbers are believed to be auspicious. The word for 'eight' (八 Pinyin: bā) sounds similar to the word which means 'prosper' or 'wealth'. Three eights is considered very lucky.
To encourage the Chinese to invest and emigrate to Australia, the Australian Government named this particular Visa the ‘888’ or the ‘Triple 8’ Visa. This logo was designed for one of the the investment funds that promotes this Visa.