# Ordinal — Style Reference
> dark observatory with one mint filament — a near-black room where a single neon green switch glows as the only thing that matters
**Theme:** dark
Source measurements are normalized; roles and recommendations are interpreted. Font summary lists are independent, not paired by position. HTML examples are reconstructions, not source components.
Ordinal is a near-monochrome dark canvas interrupted by a single luminous mint accent — the interface behaves like a dimmed control room where one neon switch is always lit. Almost the entire UI lives in #151316 with white type, gray hairlines, and quiet 5px corners, while #8ef5b5 is reserved as punctuation: primary action fills, eyebrow labels, active states, and logo glows. The product screenshot is the hero — no decorative imagery, no gradients, no illustrations — letting the calendar UI itself become the visual. Typography is Inter in only two weights (400, 500) paired with a custom monospace eyebrow face, all text sits tight with negative tracking, and the result reads as a calm, professional tool that earns its single color through restraint rather than scarcity.