This is often called night mode or dark mode. It changes the background from white to black. Install blue light-filtering apps on smartphones, tablets, and computer screens. They filter a lot of ...

For anyone who cares about their so-called "sleep hygiene" — essentially good, deep, restful sleep — it has become conventional wisdom that blue light will wreck it. Blue light is often the ...

Why? The light from our devices is “short-wavelength-enriched,” meaning it has a higher concentration of blue light than natural light—and blue light affects levels of the sleep-inducing ...

Abstract excerpt: “…black text on a white background (BW) and light blue on dark blue (B) pages received the highest ratings for readability […]; c) B pages received the highest ratings for the ...