Bluegreen is a colour that lies between blue and green on the colour spectrum. As it is a compound word, finding its antonyms can be a bit of a challenge. However, when we break down the word, we can find antonyms for blue and green. Antonyms for blue include orange, yellow, and red, whilst antonyms for green include red and purple. Therefore, antonyms for bluegreen could include redorange, yellowgreen, and purpleblue. These colours are polar opposites to bluegreen and create a striking visual contrast when used together.