Its vowel height is open, also known as low, which means the tongue is positioned as far as possible from the roof of the mouth – that is, as low as possible in the mouth.
Its vowel backness is front, which means the tongue is positioned as far forward as possible in the mouth without creating a constriction that would be classified as a consonant. Note that rounded front vowels are often centralized, which means that often they are in fact near-front.
It's rounded, which means that the lips are rounded rather than spread or relaxed.
^Basbøll (2005:46): "Nina Grønnum uses two different symbols for the vowels in these and similar words: gøre she transcribes with [œ̞] (semi-narrow transcription) and [œ] (narrow transcription), and grøn she transcribes with [ɶ] (semi-narrow transcription) and [ɶ̝] (narrow transcription). Clearly, there is variation within Standard Danish on this point, cf. the end of the present s. 2.2."