Simplex Brand: Colors, Fonts, Logo & Visual Identity

Simplex Brand Identity

A complete profile of Simplex's visual system — colors, typography, components, and personality — extracted from https://simplex.sh. Built for designers, agents, and AI tools.

Color Palette

Brand palette extracted from https://simplex.sh.

Type Color Code RGB
primary #1E293B rgb(30, 41, 59)
secondary #374151 rgb(55, 65, 81)
accent #6366F1 rgb(99, 102, 241)
background #FFFFFF rgb(255, 255, 255)
textPrimary #6366F1 rgb(99, 102, 241)
link #6366F1 rgb(99, 102, 241)

Typography

Each font links to its Google Fonts page where available.

Role Font Google Fonts Link
body Segoe UI Google Fonts →
heading Segoe UI Google Fonts →

Not found on Google Fonts? Agent Instructions that you can follow if you have permission to use the fonts:

  1. Open the company's homepage in a browser with DevTools open.
  2. In the Network tab, filter by "Font" (or by extension: woff2, woff, ttf, otf).
  3. Hard-reload the page and click around (pricing, blog, careers) — some weights only load on specific routes.
  4. For each captured font URL: right-click → Save As to download the file locally.
  5. View the page's CSS (DevTools → Sources, or curl the stylesheet URLs) and copy out the matching @font-face declarations. Rewrite each src: url(...) to point to your local file path.

Programmatic alternative: load the URL with Playwright or Puppeteer, listen for response events whose Content-Type starts with font/, and write the body to disk. The CSS extraction step is the same.

Visual Assets

UI Components

Live previews rendered using Simplex's actual button styles.

Button Primary

Button Secondary

Brand Personality

Tone: professional
Energy: medium
Audience: healthcare professionals

Simplex Brand in the Wild

Frequently Asked Questions

What is Simplex's primary brand color?
Simplex's primary brand color is #1E293B.

What accent color does Simplex use?
Simplex uses #6366F1 as an accent color.

What font does Simplex use?
Simplex uses Segoe UI as the primary typeface.

Does Simplex use a light or dark theme?
Simplex's primary site uses a dark color scheme.

How was this brand profile generated?
This profile was extracted using the Firecrawl branding extraction API.

Methodology

Brand data on this page was extracted from https://simplex.sh and is published by CharacterQuilt.

Machine-Readable Profile

Direct endpoints for agents, designers, and tooling.
GET /branding/simplex.json

{
  "colorScheme": "dark",
  "fonts": [
    {
      "family": "Segoe UI",
      "role": "body"
    },
    {
      "family": "Roboto",
      "role": "body"
    },
    {
      "family": "Open Sans",
      "role": "body"
    },
    {
      "family": "Helvetica Neue",
      "role": "body"
    },
    {
      "family": "Ubuntu",
      "role": "body"
    }
  ],
  "colors": {
    "primary": "#1E293B",
    "secondary": "#374151",
    "accent": "#6366F1",
    "background": "#FFFFFF",
    "textPrimary": "#6366F1",
    "link": "#6366F1"
  },
  "typography": {
    "fontFamilies": {
      "primary": "Segoe UI",
      "heading": "Segoe UI"
    },
    "fontStacks": {
      "heading": [
        "GeistSans",
        "GeistSans Fallback",
        "-apple-system",
        "BlinkMacSystemFont",
        "Segoe UI",
        "Roboto",
        "Oxygen",
        "Ubuntu",
        "Cantarell",
        "Open Sans",
        "Helvetica Neue",
        "sans-serif"
      ],
      "body": [
        "-apple-system",
        "BlinkMacSystemFont",
        "Segoe UI",
        "Roboto",
        "Oxygen",
        "Ubuntu",
        "Cantarell",
        "Open Sans",
        "Helvetica Neue",
        "sans-serif"
      ],
      "paragraph": [
        "GeistSans",
        "GeistSans Fallback",
        "-apple-system",
        "BlinkMacSystemFont",
        "Segoe UI",
        "Roboto",
        "Oxygen",
        "Ubuntu",
        "Cantarell",
        "Open Sans",
        "Helvetica Neue",
        "sans-serif"
      ]
    },
    "fontSizes": {
      "h1": "48px",
      "h2": "60px",
      "body": "12px"
    }
  },
  "spacing": {
    "baseUnit": 4,
    "borderRadius": "3px"
  },
  "components": {
    "buttonPrimary": {
      "background": "#6366F1",
      "textColor": "#FFFFFF",
      "borderRadius": "0px",
      "borderRadiusCorners": {
        "topLeft": "0px",
        "topRight": "0px",
        "bottomRight": "0px",
        "bottomLeft": "0px"
      },
      "shadow": "rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.05) 0px 1px 2px 0px"
    },
    "buttonSecondary": {
      "background": "#FFFFFF",
      "textColor": "#6366F1",
      "borderRadius": "0px",
      "borderRadiusCorners": {
        "topLeft": "0px",
        "topRight": "0px",
        "bottomRight": "0px",
        "bottomLeft": "0px"
      },
      "shadow": "rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.05) 0px 1px 2px 0px"
    }
  },
  "images": {
    "logo": null,
    "favicon": null,
    "ogImage": "https://simplex.sh/og-image.png"
  },
  "personality": {
    "tone": "professional",
    "energy": "medium",
    "targetAudience": "healthcare professionals"
  },
  "confidence": {
    "buttons": 0.95,
    "colors": 0.9,
    "overall": 0.925
  }
}