Ecru describes the shade greyish-pale yellow or a light greyish-yellowish brown.
From the en.wikipedia.org
Between them, an imposing Hindu temple thrusts rounded towers into a greyish sky.
From the telegraph.co.uk
On hatching the chick has pinkish legs, which turn to greyish-black as it ages.
From the en.wikipedia.org
The western lowland gorilla can be brown or greyish with a yellowish forehead.
From the en.wikipedia.org
Between them rises the flower stem, very stout and covered in a soft greyish bloom.
From the independent.co.uk
The young shells are often orange, while older specimens are usually greyish-white.
From the en.wikipedia.org
The upper mantle is a solid black, merging into a greyish-black lower mantle.
From the en.wikipedia.org
You may be seeing Hummingbird Hawk-moths, which are greyish with rufuous hind wings.
From the newscientist.com
The ventral area is a lighter cream, shading to greyish purple on the belly.
From the en.wikipedia.org
More examples
Grey: of an achromatic color of any lightness intermediate between the extremes of white and black; "the little grey cells"; "gray flannel suit"; "a man with greyish hair"
Grey (often spelled gray in the U.S., see spelling differences) describes the colors ranging from black to white. These, including white and black, are known as achromatic colors or neutral colors. These "new" neutrals have low colorfulness and chroma.