This first name is predominantly found in South America, although it is not very common there: one is much more likely to encounter the name as a surname there instead. Because of that, it is possible that the bearers' parents were inspired to give their sons the surname as a first name, just like it is done in English-speaking countries these days. The surname is derived from the Spanish word zarco meaning "light blue" (ultimately from Andalusian Arabic zárqaʼ, which in turn is derived from Arabic ʼazraq "blue"), which is in reference to the eye colour of the surname's original bearer. However, given the fact that the word zarco is still in use in modern Spanish, it is also possible that in the case of some bearers, their parents deliberately named them after the colour (instead of after the surname). It ultimately doesn't matter either way, as the etymology is the same in both scenarios.