Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
grey-blue is an adjective meaning "of blue tinged with grey". It carries one recorded sense.
of blue tinged with grey
Definitions, synonyms and semantic relations for grey-blue come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.