Northline
Colours:
Fonts:
Outfit Bold
Move with certainty
Inter Regular
Fleet teams, partner docs, and product UI.
Grid system
Downloadable Assets
The best way to keep brand visual identities AI friendly.
A living style guide. Colours, fonts, type rules, spacing, and logos with usage rules. Build it free.
sample slabs
Free to use
AI & People friendly
Fast setup
One shareable URL
Assets included
Everything your brand needs
One slab to rule your entire visual identity — built for humans and AI alike.
Colour palettes
Primary, secondary, and accent swatches with HEX, RGB, and HSL values exported in every format.
Typography scale
Font families, weights, sizes, and line heights — all in one place with live preview.
Spacing tokens
Define your 4px grid and spacing system. Output as CSS variables, JSON, or plain text.
Logo library
Upload all logo variations with clear-space rules, minimum sizes, and misuse examples.
AI-ready format
Structured output that AI tools understand natively. Paste your slab link to brief any model.
Shareable link
A single URL for your whole team. Always up to date, always the source of truth.
How it works
From scattered brand bits to a working slab.
Turn brand material into something teams, tools and AI agents can actually reference.
01
Start a slab
Name the brand, add a source URL, or begin from a blank style guide.
02
Collect the system
Pull in colours, type, spacing, logo files, usage notes, and assets.
03
Tidy the rules
Edit specimens, label tokens, remove noise, and keep only what people should use.
04
Share the URL
Publish a visual page, JSON endpoint, and asset downloads from one place.
Visual slabJSON endpointAsset downloadsShareable link
Visual + JSON + assets
Every slab ships three URLs: a visual page for humans, JSON for tools and pipelines, and a downloads page for logo and font files.
Custom fonts, handled
Upload TTF/OTF/WOFF and we render real specimens. License-restricted fonts can display as outline specimens — the file is never served.
Free to build
Drafts are free and private. Publish your first slab free, then upgrade when you need exports, privacy, teams, or more live slabs.