The term blue collars typically refers to workers in manual or industrial jobs. Therefore, the antonyms for blue collars may be white collars, which refers to employees working in professional, administrative, or executive positions. Another antonym could be pink collars, which refers to workers in service or care-giving occupations, such as nurses and teachers. Those who work in creative fields such as artists or writers may be classified as green collars. Therefore, the antonyms for blue collars could include white, pink, and green collars, representing the diverse range of industries and positions in the workforce.