"mild darkness" is a grammatically correct phrase and can be used in written English.
It refers to a gentle or soft level of darkness. It can be used in various contexts, such as describing the lighting in a room or the level of darkness outside. Here is an example sentence: After the sun set, the room was filled with a pleasant, mild darkness that made us feel cozy and relaxed.
"The landscape is dark, or half-dark, or a quarter-dark, a mild summer darkness, which means that all contours, all surfaces retain a reflection of the day just past, an unvarying quantity, a dawn (or a dusk) that lasts all night".
And those warts seem, somehow, to be the point: Hollywood doesn't do much with explicit sex anymore (the NC-17 rating has proven to be a commercial kiss of death) and the image-polishing of stories and characters turns darkness into mild shadow.
Microalgae suspensions (2 × 10 cells/mL) in the late exponential growth phase were mutagenized using 70 mM EMS (Sigma Aldrich) for 1 h in darkness at room temperature with mild agitation.
'I feel a mild horror about what goes on in the wet darkness between the shells of bivalves,' he wrote in 1989, the year he became food critic of American Vogue.
In contrast, photoreceptor degeneration was milder in these lines of mice kept under constant darkness.
Unlike most paintings of his later years, which evoke horror and darkness, this double portrait imprints a gentle aspect of humanity on the mild physiognomies of physician and patient.
A mild-mannered, solicitous man in real life, McGowan struggled at first to convey Savile's darkness.
Gleason kept his gun out and his mild eyes trained on Stregg as he put the car in drive and rolled forward into the darkness beyond the street lamp's glow.
When I emerged, the land before me no longer seemed in darkness, and I drove on "quite dumb with something for which 'happiness' must be too mild a term" (Crane, in a letter to Waldo Frank).
He leans down to me and his face turns from mild, to a snarl, to a thousand gnashing teeth, to muscles tearing themselves apart, to fire, to flies, to darkness.
