Identity
Colour
The palette, each colour's role, and which pairings are allowed.
The palette is a dark green room with one light in it. Nearly every surface is green, nearly all type is warm off-white, and lime does exactly one job: it points at the thing that matters most on the screen. Used twice on a page it stops working.
A dark green room with one light in it. Lime points at the thing that matters most on the screen, and nothing else.
Support
Surfaces, states and the two colours with narrow, specific jobs.
Never
#050706. Every measured pairing is on Pairings & contrast.Rules
Do: Build on Dark Green. Deep Green sits behind it for atmosphere, not for contrast.
Do: Use lime once per view — the primary action, or the one italic phrase.
Do: Keep off-white warm. #fffdf4, never pure white.
Do: Reserve Void for the single biggest moment on a page.
Do not: Do not use Shape Blue for a button, link or label. It belongs to 3D shapes and rim light.
Do not: Do not set body text in Muted. It measures 3.59:1 on Card and fails AA.
Do not: Do not introduce a colour that is not on this page — including tints of these.
Do not: Do not put off-white on any lime surface.