She was dressed in blue.
او لباس آبی پوشیده بود.
the blue waters of the lake
آب های آبی دریاچه
II. blue2 noun
1. [uncountable and countable] the colour of the sky or the sea on a fine day:
She nearly always dresses in blue.
the rich greens and blues of the tapestry
Cambridge Advanced Learner's Dictionary - 4th Edition
blue / bluː / adjective (COLOUR)
A1 of the colour of the sky without clouds on a bright day, or a darker or lighter type of this:
a faded blue shirt
pale blue eyes
Her hands were blue with cold (= slightly blue because of the cold) .
© Cambridge University Press 2013
1. countable, uncountable the colour of a clear sky or the sea/ocean on a clear day
• bright/dark/light/pale blue
• The room was decorated in vibrant blues and yellows.
• She was dressed in blue.