baby blue

a very light blue.

baby blues, Informal. a person's blue eyes: His charm lies largely in the way he bats his baby blues.

Origin of baby blue

An Americanism dating back to 1885–90

ba·by-blue, adjective

Nicole LaPorte charts the rise and spectacular downfall of the star with the baby-blue eyes.

Mel Gibson's Downfall |Nicole LaPorte |July 12, 2010 |DAILY BEAST
I seem now to see her 'baby-blue' eyes opening each moment wider and wider.

Lippincott's Magazine, Vol. 20, August 1877 |Various
Through her storm she was, to the eye, sitting quietly with her fingers between the pages of a baby-blue book on home-dressmaking.

Main Street |Sinclair Lewis
Anything that could be tied with a baby-blue ribbon was so tied.

The Dust Flower |Basil King

Her baby-blue eyes gleamed triumph at the cheering news that Miss Cairns was in.

Marjorie Dean College Junior |Pauline Lester
Dillard's round, baby-blue eyes dwelt upon her in a protectingly hungry way.

The Man from Jericho |Edwin Carlile Litsey