The phrase "a bleak line" is correct and usable in written English.
It can be used to describe a line that conveys a sense of hopelessness or despair, often in a metaphorical context.
Example: "The poet drew a bleak line between hope and despair in his latest work."
Alternatives: "a grim line" or "a dismal line".
An estate resident, Mary Finch, takes a bleaker line: "I think that the Olympics has lost me my home".
James says the bleak line "I cried for you on the kitchen floor" from You Know I'm No Good was inspired by one of many splits with her then boyfriend Blake Fielder-Civil.
Ellen, played by Jessica Barden, is a gobby, paint-huffing hellion, friendless and flailing as her gran dies in the box-room and her mother parties with a bleak conga-line of awful men.
Has a bleaker punch line ever been written?
The tiny tablets, combined with the whisky, had started to blur the bleak lines of young Leon's life.
This time, the deeply lined, gaunt faces of the aged are a bleak counterpoint to the bold lines and patterns found in the fields and on the sides of houses.
Guillaume Pépy, the head of SNCF, suggested a bleak outlook for the D line: "Passengers are increasing by about 5%, or 25,000 people, a year.
At first sight the coat is embroidered with positive qualities of disabled people ("patient, intuitive, brave"), but its lining tells a bleak reality: a list of MPs, each partnered with the name of a disabled person from Calum's List – the list of deceased benefit claimants compiled by disability campaigners, where welfare reform is alleged to have had some culpability in their deaths.
If being miserable helps your material that is a scant silver lining indeed for a bleak existence.
Despite some wildly funny scenes, the three time lines coalesce into a bleak tale of how we disappoint ourselves and each other.
