Meanings
nouniron blue (plural iron blues)
plural iron blues
- Any of several blue pigments, but especially Prussian blue or Turnbull's blue.
Synonyms & antonyms
nounslightly purplish or bluish dark grey
Similar
steel greysteel grayDavy's greyDavy's gray
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
APA
iron blue. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/iron%20blue
MLA
“iron blue.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/iron%20blue. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “iron blue,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/iron%20blue.
Source: iron blue on Wiktionary, CC BY-SA 4.0.