noun, noun which may take the genitive case particle 'no'
Used as a noun or with の to describe something blue. Common in fashion, design, and everyday color terms.
She was wearing a blue dress.
The sky is a beautiful blue.
Colloquial な-adjective meaning feeling sad or depressed, similar to English 'feeling blue'. Often used in casual conversation.
I'm feeling a bit down today.
I'm feeling blue after the breakup.
Her car is blue.
I always feel blue on rainy days.
I bought a blue shirt.
I get a gloomy feeling on Mondays.
bluegrass (music)