Navy is blue with most of the light taken out of it. It reads immediately as blue, sits at a fraction of the brightness, and is the colour most interfaces reach for when they need something dark that is not black.
Dark without being empty
A black screen is indistinguishable from a screen that is off. Navy is not , it is obviously running, while producing little enough light to be comfortable in a dim room. That makes it a natural standby or idle colour for a shared display, a kiosk, or a machine that must not sleep.
Testing blue at low output
A full blue field isolates the blue subpixel at maximum. Navy does the same thing near the bottom of the range, which is where different problems appear: black crush, where dark blues collapse into an indistinguishable mass, and low level banding, where the steps between adjacent dark values become visible. Comparing full blue with navy is a quick way to see how a panel handles the dark end of a single channel.
What this navy screen offers
- Deep
#000080with no gradient or texture - Clearly lit while emitting very little light
- Tests the blue channel at the dark end, where black crush and banding show
- Free hex entry across the entire dark blue range
- Live preview as the colour changes
- One press fullscreen with no browser interface
- PNG, JPG, WebP or SVG export at common presets or any custom size
- Nothing uploaded, no account required
- Keyboard accessible with visible focus states
Related screens
Blue at full intensity, indigo and teal as neighbours, black for a true dark field.
Navy screen questions
Why use navy instead of black?
Because black looks like a switched off screen. Navy makes it clear the display is on and the machine is awake, at almost the same low light level , which is why so many standby and idle screens use a deep blue.
Is a dark blue screen better before bed?
Not especially. Blue wavelengths are the ones associated with circadian effects, so a dark red or amber field is the better choice if sleep is the concern. Navy’s advantage is low brightness, and brightness is the larger factor either way.