The phrase 'catches the eye' refers to something that stands out and is visually appealing. Some antonyms for this phrase could include 'blends in', 'goes unnoticed', 'fails to impress', and 'unremarkable'. If something 'blends in', it means that it is not easily noticeable and does not attract attention. Similarly, if something 'goes unnoticed', it means that it is not seen or recognized. If something 'fails to impress', it means that it does not make a positive impact and is forgettable. Finally, if something is 'unremarkable', it means that it lacks distinctive features and does not stand out in any way.