blue hour

UK/ˈbluː aʊə/Canada, US/ˈblu(ː)aʊɚ/

noun

The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.

Similar
crepusculegloaming
OriginFrench heure bleue →
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Meanings

nounblue hour (plural blue hours)

plural blue hours

  1. The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.

    Synonyms: crepuscule, gloaming

Synonyms & antonyms

nounThe period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.

Similar
crepusculegloaming
Also see
crepusculegloamingtwilight

Origin

  1. Frenchheure bleue
  2. Englishblue hour

Calque of French heure bleue.

More words from French

Full word history & related roots →

Translations

Basque ordu urdin
  • ordu urdinperiod of twilight
Catalan hora blava
  • hora blavaperiod of twilight
French heure bleue
  • heure bleueperiod of twilight
German blaue Stunde
  • blaue Stundeperiod of twilight
Italian ora blu
  • ora bluperiod of twilight
Portuguese hora azul
  • hora azulperiod of twilight
Russian режи́мное вре́мя
  • режи́мное вре́мя (režímnoje vrémja)period of twilight
Spanish hora azul
  • hora azulperiod of twilight

Rhymes & wordplay

Rhymes with blue hour

powerhourflourbauersourempowerbowerGowerdevourscourdourstoursowerlourdisempowerdeflowerbougherenflowerfrost flowergolden hourseasonal hour
All rhymes →
Cite this entry
APA

blue hour. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/blue%20hour

MLA

“blue hour.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/blue%20hour. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “blue hour,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/blue%20hour.

Source: blue hour on Wiktionary, CC BY-SA 4.0.