KM0 brand guide

Todo empieza en cero

KM0 is a practice app for IB Spanish ab initio: vocabulary and verb drills on a metro map. This page explains how the identity works, so anything new looks and sounds like KM0.

The name

KM0 is short for kilómetro cero. In Madrid's Puerta del Sol, a plaque in the pavement marks the point every one of Spain's radial roads is measured from. It is the place you start from.

The app works the same way. Every theme is a line, every list is a station, and every line runs out of Sol, the real home of kilómetro cero. Say it the Spanish way, ka eme cero, or just "K-M-zero".

The Zero

The symbol is a tall zero lit in sodium amber, with a dot at its centre: a dotted zero, the old sign-maker's way of telling 0 from O. The dot is the origin, kilómetro cero itself, and takes the ink of the screen.

On lit screen

On e-paper

Clear spaceKeep at least half the Zero's width empty on every side.

Smallest sizeSymbol 16px tall, wordmark 18px tall. Below that, use the symbol alone.

GroundsThe lit screen or e-paper, inside a dark bezel. On photos, put it on a screen plate.

Wordmark and lockup

The wordmark keeps its narrow drawn KM, with the Zero standing in for the 0. The lockup adds the tagline underneath, tracked wide. Letters and dot take the ink of the screen; the Zero is always amber (a deeper amber on e-paper).

Wordmark · lit screen

Wordmark · e-paper

Lockup · lit screen

Lockup · e-paper

km0-wordmark.svg (for dark grounds)
km0-wordmark-light.svg (for light grounds)
km0-lockup.svg / light
km0-symbol.svg / light
km0-app-icon.svg / 1024px PNG

Don't

No bar through the ZeroIt is a station marker, not a transit-company roundel.

No new coloursThe Zero is always amber and the dot always ink, never a line colour.

No round ONever stretch, squash or swap the Zero for a circle or the letter O.

No rays or burstsLines only meet the Zero on the metro map, at 0° and 45°.

Colour

KM0 is the screen inside a metro carriage. Three colours carry the brand: the lit screen, its ink, and sodium amber, the one lit accent. The wall and bezel frame every screen. The six line colours are enamel paints that belong to the themes and only appear where a theme is meant.

Lit screen#15130F

Screen ink#F2EDE2

Sodium amber#FFAA1F

Carriage wall#E1E2DE

Bezel#0A0907

L1 Identities#DA6040 brick

L2 Experiences#2E9F95 petrol

L3 Human ingenuity#5C82D8 cobalt

L4 Social organization#B26BA7 plum

L5 Sharing the planet#7DA542 moss

C Core essentials#A69F90 stone

Type

B612 carries all text. Airbus drew it for cockpit screens, to stay readable on a lit display at a glance. Headings are bold and in sentence case; only small labels use tracked capitals. B612 Mono sets codes and keys. Doto, a dot-matrix face, is kept for short numbers such as the exam countdown, never for words you study. Numbers are always tabular.

2 días

Doto Black · countdowns and short numbers only

Próxima estación

B612 Bold · headings, buttons, prompts

el azúcar · la sequía · despedir

B612 Regular · words, answers, reading

L1 · Enter · M

B612 Mono Bold · line codes and keys

Voice

KM0 talks like a platform announcement: short, direct, useful. Spanish leads and English supports. One idea per line. Numbers do the talking. No hype and no emoji.

Próxima parada: Paper 1 · 2 días

Wrong answer? Retype it. It comes back later.

Todo empieza en cero.

Don't

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In use

The link preview and the app icon, as they appear when KM0 is shared or added to a home screen.