"blackish" is a correct and usable word in written English
It is used to describe something that is somewhat black or has a hint of black in it. Example: The night sky was illuminated by a blackish moon, casting an eerie glow over the deserted streets.
The "best screenplay" went to Neil Labute's witty blackish comedy "Nurse Betty", about a diner waitress who confuses her nasty real life with her favourite medical soap opera.
The Ash might be salty or sweet, blackish or white.
The most unexpected was "Orphans", a blackish comedy by Peter Mullan, the Cannes prize-winning star of Ken Loach's "My Name is Joe": this won four of the 19 unofficial awards.
In the past few years Ms Bainbridge has been a superbly various historical novelist her "Every Man for Himself" (1996) was a blackish comedy about the sinking of the Titanic; "The Birthday Boys" (1991)" recreated Captain Scott's doomed expedition to the South Pole in 1912.In "Master Georgie" she has jumped back to the 19th century with a novel that deserves to be on the Booker shortlist.
The blue painting is blackish in colour, with dark spots at intervals where thick blobs of pigment were deposited by the brush the so-called heaped and piled effect.
The common gallinule (Gallinula chloropus), blackish with a scarlet frontal shield, is called the moorhen or water hen where it occurs in Europe and Africa.
The black-masked lovebird, A. personata (see photograph), of Tanzania is green with a blackish brown head and a yellow band across the breast and hindneck; a common mutation in captivity is blue and whitish.
The blackish tail is slightly shorter than the body and is tipped with black or reddish brown.
About 11 cm (4.5 inches) long, the bananaquit is blackish above and yellow below, with, generally, white stripes near the eyes and white patches on the wings.
The North American raccoon's fur is shaggy and coarse, and its colour is iron-gray to blackish with brown overtones.
The warthog is a sparsely haired, large-headed, blackish or brown animal standing about 76 centimetres (30 inches) at the shoulder.
