Brand assets

Logo files, palette, typography, and a short usage guide. Released under the same MIT license as the rest of the project; use freely in articles, presentations, and integration material.

Logo

The Capa mark is a hooded figure rendered in a single accent purple, with a negative-space C-curve in the body. Two readings, both intended: "capa" in Portuguese is cape or cloak, and the negative space spells the C of the language name. Designed to read at any size, from a 16-pixel favicon to a poster.

SVG scalable, transparent

SVG (light bg) same file, light surface

Favicon square viewBox, for icon slots

PNG raster fallback for sites that do not render SVG

Click any tile to download. The PNG is the project-root capa_logo.png; the two SVGs (capa_logo.svg and the square-viewBox favicon.svg) are served from this site.

Palette

The site uses a tight dark palette anchored on a single accent purple. Listed below in the order they appear most prominently in the design.

Accent #a78bfa The Capa purple. Used for the logo, headings highlight, primary links, current-page indicator. The logo SVG uses #a885fa as a close variant.

Background #0d1117 Primary page background.

Surface #161b22 Cards, footer, elevated surfaces.

Code background #1a1f29 <pre> blocks for code samples.

Foreground #c9d1d9 Body text.

Dim foreground #8b949e Secondary text, footer links, captions.

Bright foreground #f0f6fc Headings, emphasised text.

Border #30363d Card borders, dividers, section rules.

OK #7ee787 Success indicators, built-in types in code samples.

Warn #ff7b72 Errors, danger callouts, declaration keywords in code samples.

Typography

The site uses the operating system's default UI sans for body text and the platform monospace for code, with no external font requests. This is a deliberate choice: it keeps the site fast, sandboxable, CSP-clean, and consistent with what the user already sees on their device.

Body / UI -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif

Code / monospace ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace

The wordmark "Capa" in the header and hero uses the same UI sans at weight 700 with a slight negative letter-spacing (-0.01em). No custom letterforms.

Usage guidelines

The brand assets are MIT-licensed and freely usable. A few requests, no enforcement:

Keep the proportions. The logo SVG is designed to scale uniformly. Do not stretch, skew, or recolour.
Use the accent colour on the logo whenever the surrounding design allows it. If a monochrome version is needed, prefer the foreground colour of the surrounding text over an arbitrary substitute.
Capa is written with a capital C and a lowercase rest (Capa, not CAPA or capa). All-caps is reserved for code (the Net, Stdio, etc. capability types, which are written in CamelCase).
The hooded figure is intentional, "capa" is Portuguese for cape or cloak. Please do not retitle it as a penguin, mage, or hooded ninja in third-party material; the metaphor matters.