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Indigo Screen

A fullscreen indigo screen: dark enough to use as ambient light in a dim room, saturated enough for a night sky backdrop. Download as a PNG at any resolution.

Indigo is the last colour before blue turns into black , deep enough to swallow a room’s reflections, but still visibly a colour. It exists on this site for people who want a dark screen that is not the void of black.

A dark screen that still reads as lit

A pure black display looks switched off, which is sometimes exactly what you want and sometimes confusing. Indigo solves that: it is unmistakably on, while emitting little enough light to sit in a dark room without lighting it. Useful for a machine that must stay awake and visible, a standby state on a shared display, or a projector field between segments.

Evening use

Deep blues are low in total output, which is the property that actually matters when a screen has to be looked at in a dark room. That said, blue is the part of the spectrum most implicated in circadian effects, so a deep blue is a poorer choice than a deep red or maroon if the goal is minimising sleep disruption. Brightness remains the largest variable either way.

What this indigo screen offers

Navy is the blue equivalent, purple the redder one, violet the light version, and black the true dark field.

Indigo screen questions

Why choose indigo over black?

Because a black screen is indistinguishable from a screen that is switched off. Indigo makes it obvious the display is running while producing almost as little light, which suits standby states, always on machines and shared displays.

Is indigo good for night time use?

Better than white, worse than red. Its low brightness is the main benefit; its blue content is the drawback, since short wavelengths are the ones associated with circadian effects. If night vision or sleep is the concern, red or maroon are better choices.