How to Say "neon" in Spanish
The Spanish word for “neon” is “luminoso” — B1 level.
English → SpanishB1
adjectiveB1
referring to electric signs

Examples
Vimos un cartel luminoso en el centro de la ciudad.
We saw a neon sign in the city center.
Las estrellas son cuerpos luminosos.
Stars are luminous bodies.
Mi reloj tiene agujas luminosas para ver la hora en la oscuridad.
My watch has glowing hands to see the time in the dark.
Position Matters
When 'luminoso' is used to define a type of object (like a 'cartel luminoso'), it almost always comes after the noun.
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