noun
high contrast
Used in computing and display contexts to describe a high-contrast mode or setting, often for accessibility.
スマホの設定でハイコントラストをオンにすると、文字が読みやすくなる。
Turning on high contrast in your smartphone settings makes text easier to read.
Variant with interpunct; less common in running text.
コントラスト means 'contrast' in general; ハイコントラスト specifically refers to a high-contrast mode or state.
Loanword from English 'high contrast'.