► 形容動詞真っ暗  [(3)まっくら]    
meaning:  dark  rank: 2☆ 
家の
中は真っ暗だった ⇨ It was pitch dark inside the house
真っ暗  [(3)まっくら]  [
お先真っ暗]    
meaning:  dark  rank: 2☆ これではお先真っ暗だ ⇨ The future looks bleak
More examples:- これじゃお先真っ暗だ ⇨ It is dark ahead. The future looks bleak
 - 洞窟の中は真っ暗闇だった ⇨ The inside of the cave was a complete darkness