Riad (2014) reports that [ɶː] in Stockholm Swedish is sometimes difficult to distinguish from [ɒː], which is the main realization of the /ɑː/ phoneme, a sign that both vowels are phonetically very close.
Its vowel height is open, also known as low, which means the tongue is positioned far from the roof of the mouth – that is, low in the mouth.
Its vowel backness is front, which means the tongue is positioned forward in the mouth without creating a constriction that would be classified as a consonant. Rounded front vowels are often centralized, which means that often they are in fact near-front.
It is rounded, which means that the lips are rounded rather than spread or relaxed.