Indigo
Indigo adjective - Having a color between blue and violet.
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Synonyms for Indigo
Steel blue and indigo are semantically related. In some cases you can use "Steel blue" instead an adjective "Indigo".
Steel blue
Steel blue noun - A greyish blue color.
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Synonyms for Steel blue
Indigo and steel blue are semantically related. You can use "Indigo" instead an adjective phrase "Steel blue".
Mutual synonyms
Related pairs
Cite this Source
Steel blue and Indigo. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/indigo/steel_blue
Indigo & Steel blue. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/indigo/steel_blue>.
Steel blue or Indigo. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/indigo/steel_blue.
Google Ngram Viewer shows how "indigo" and "steel blue" have occurred on timeline