The phrase "a dim blue" is correct and usable in written English.
It can be used to describe a shade of blue that is not bright or vibrant, often conveying a sense of softness or mutedness.
Example: "The room was illuminated by a dim blue light, creating a calming atmosphere."
Alternatives: "a muted blue" or "a soft blue".
Julian motioned to Obie's neck, where Dr. Setumahaven's laser had reduced the spider to a dim blue shadow.
Within the mounds of snow at the end of the driveway, I could see a dim, blue arctic light.
For T∞ < 1220 K, ignition was initiated far downstream as a dim blue premixed flame, followed by rapid upstream propagation to form an envelope flame.
The brightest star in sight would be our sun, a glowing point of light below Orion's foot, with Earth a dim blue dot lost in its glare.
For T∞ = 1050 1240 K, ignition initiated far downstream (at a distance of 3 40 times d0, and at a larger distance for a lower temperature) as a dim blue premixed flame, followed by rapid upstream propagation to form an envelope flame around the droplet.
Amano and Akasaki laid the groundwork by getting gallium-nitride, a notoriously finicky material, to emit a dim blue glow while working together at Nagoya University in the late 1980s.
A dim-blue light with the dark background extracts a rod ERG and a bright red light with the light adapted background will give a cone ERG.
We used 655 nm red light (outside the sensitive range of the larva's visual pigments [ Salcedo et al., 1999]) to activate these neurons while presenting a constant dim blue light background (Klapoetke et al., 2014) to mask any visual response to the red light.
The Sun's splash headline is "Dim blue line" with a story of alleged police incompetence over a mobile phone theft.
On a stage illuminated only by the dim blue light of lamps on music stands, the superb flutist Erin Lesser played lines that fluttered, dipped and soared over a bass drum that rolled like distant thunder.
Frew is part of a team of researchers studying the dim blue star to better understand its nature.
