a light bluish gray.
Related formspearl bluish, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for pearl blue
I found instead a pearl-blue station wagon with pointed tailfins.‘Tracing the Blue Light’: Read Chapter 1 of Eileen Cronin’s ‘Mermaid’|Eileen Cronin|April 8, 2014|DAILY BEAST
She had the reddish hair of the Binns and the pearl-blue eyes of the Rummelsbergers from over the mountains.The Soldier of the Valley|Nelson Lloyd