robin's-egg blue
nounDefinition of robin's-egg blue
1
: a variable color averaging a light greenish blue that is bluer and paler than average turquoise (see turquoise sense 2a) or average turquoise blue and bluer and deeper than average aqua blue — compare robin's egg
2
: a light bluish green that is greener and duller than average aqua green (see aqua green sense 1) and greener and paler than average turquoise green
— called also bird's-egg green, eggshell blue