Neon palette generator
Nearest named colour: aquamarine
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Generates near-maximum saturation colours at the lightness where they read as glowing rather than merely bright.
How to use the neon palette generator
Neon works on screens because a display emits light rather than reflecting it, so a fully saturated colour genuinely looks luminous in a way no printed ink can. That is also its limitation: a neon palette that looks electric on a monitor prints as muddy, because those colours are outside the CMYK gamut entirely. If the work is going anywhere near print, check the colours convert before committing. On screen, the other caution is that saturated colours vibrate against each other; neon on neon is genuinely hard to look at, so a dark neutral background is the usual partner.
Questions
They are outside the CMYK gamut. A display emits light; ink reflects it, and the most saturated screen colours have no ink equivalent.
Highly saturated colours of similar lightness vibrate at their shared edge. Pair neon with a dark neutral instead.
Not necessarily. A palette generator arranges hues; it says nothing about contrast. Check any text-on-background pair against the contrast checker before shipping it.
Hex for anything going into a design tool, HSL when you want to adjust lightness by hand, and OKLCH when you need two colours to look equally light; it is the only one of the four where that number means what you expect.
Something very dark and unsaturated. That is why neon design is almost always on near-black.