A developer's Swiss Army knife for AI coding, presented as a clean, no-nonsense utility.
02
Color
#201d1dInk
#9a9898Ink soft
#fdfcfcBG
#f8f7f7BG soft
#646262Muted
rgba(100, 98, 98, 0.2)Line
A monochromatic, high-contrast palette derived from text ink, using subtle grays for structure and hierarchy.
03
Typography
monospace
display56px · 700
heading24px · 700
body16px · 400
Use monospace for all text elements to maintain a technical, developer-centric feel. · Maintain consistent line heights for readability, especially in code blocks.
04
Spacing
4px
8px
12px
16px
24px
32px
64px
80px
A consistent rhythm built on a 4px base unit, with generous padding in content sections.
05
Surfaces
sm · 4px
md · 6px
lg · 6px
pill · 999px
A single, subtle 1px border in rgba(100, 98, 98, 0.2) is used to delineate sections and components.
06
Layout
1280container
12columns
24pxgutter
768 / 1024breakpoints
A single-column centered layout with generous vertical padding separating distinct content blocks.
07
Motion & Interaction
150msmicro
180mssmall
400msmedium
cubic-bezier(0.4, 0, 0.2, 1)easing
Subtle opacity transitions on hover for interactive elements.
Subtle opacity change to indicate interactivity. · Standard pointer cursor with no visible scale or press effect.
08
Components
buttonA dark, monochrome button with rounded corners for primary actions like 'Download'.
cardSimple, bordered cards for install commands, using a tabbed interface.
chipA small, dark 'New' badge used for announcements.
inputA terminal-style command block with a copy button.
heroA large, text-heavy hero with a prominent headline, subtitle, and a command block for quick installation.
09
Voice & Don'ts
ToneDirect, technical, and confident.
HeadlinesBold, monospace statements that are clear and benefit-driven.
CTAsSimple, action-oriented labels like 'Download' and 'Learn more'.
Don't use a serif or humanist sans-serif font — screenshot shows a monospace font used exclusively for all text.
Captured from the live site · real computed styles
11
System prompt
This is the website for Opencode, an open-source AI coding agent. The design is minimalist and technical, targeting developers. It uses a strict monochromatic color palette with a very light off-white background (#fdfcfc) and near-black ink (#201d1d). The entire typographic system is monospace, reinforcing the developer-focused identity. The layout is a clean, single-column structure with generous whitespace. Critical design constraints: never use a serif or humanist sans-serif typeface, avoid introducing any saturated accent colors, and ensure all surfaces remain flat without shadows or gradients.
Bring this taste to your agent
Hand your AI agent a machine-readable spec of this design — tokens, type, motion, the whole DNA.