Human Design Profile — Lines & Combinations Explained

What is a Human Design Profile?

A Profile is a two-number combination that describes a person’s role in life and their primary learning style. Written as “Line / Line” (e.g., 3/5, 1/4, 6/2), the Profile is derived from the Lines of the Sun and Earth activations in the Personality (Conscious) and Design (Unconscious) calculations.

There are 12 possible Profiles, formed from combinations of the 6 Lines. Profiles describe archetypal roles — the Investigator, the Hermit, the Martyr, the Opportunist, the Heretic, and the Role Model — and their combinations create distinct life themes and interaction styles.

For developers, Profile is a clean string field in the API response, useful for content personalization, coaching app logic, and display labels.

The 6 Lines

Each of the 64 Gates has 6 Lines, which are sub-positions within the gate’s hexagram. The Line of the Sun (Personality) becomes the first number in the Profile; the Line of the Earth (Design) becomes the second.

Lines 1–3 are considered “lower trigram” (personal, self-focused) and Lines 4–6 are “upper trigram” (transpersonal, other-focused).

The 12 Profile Combinations

How the API Calculates Profile

Profile is derived from two planetary positions:

1. Personality Sun — the Sun’s position at the exact moment of birth, mapped to a Gate and Line
2. Design Earth — the Earth’s position 88 solar degrees before birth, mapped to a Gate and Line

The Line number (1–6) is determined by the degree position within the Gate’s arc on the Human Design wheel. The API performs this calculation automatically with a high-precision chart calculation pipeline.

Calculation example:

• Personality Sun at Gate 3, Line 5 → first Profile number: 5
• Design Earth at Gate 50, Line 1 → second Profile number: 1
• Result: Profile 5/1

API Response Format

Profile is returned as a string in the top-level bodygraph response:

{
  "type": "Generator",
  "strategy": "To Respond",
  "authority": "Sacral Authority",
  "profile": "3/5",
  "definition": "Single Definition",
  "defined_centers": ["Sacral", "Throat", "G", "Solar Plexus"]
}

To access Profile in your application:

const response = await fetch('https://api.humandesignhub.app/v1/bodygraph', {
  method: 'POST',
  headers: { 'X-API-KEY': 'YOUR_API_KEY', 'Content-Type': 'application/json' },
  body: JSON.stringify({ datetime: '1990-01-15T14:30:00+09:00' }),
});

const chart = await response.json();

// Parse the two profile lines
const [line1, line2] = chart.profile.split('/').map(Number);

console.log(`Profile: ${chart.profile}`);   // "3/5"
console.log(`Conscious Line: ${line1}`);    // 3
console.log(`Unconscious Line: ${line2}`);  // 5

Displaying Profiles in a UI

A recommended display pattern:

const PROFILE_NAMES = {
  '1/3': 'Investigator / Martyr',
  '1/4': 'Investigator / Opportunist',
  '2/4': 'Hermit / Opportunist',
  '2/5': 'Hermit / Heretic',
  '3/5': 'Martyr / Heretic',
  '3/6': 'Martyr / Role Model',
  '4/6': 'Opportunist / Role Model',
  '4/1': 'Opportunist / Investigator',
  '5/1': 'Heretic / Investigator',
  '5/2': 'Heretic / Hermit',
  '6/2': 'Role Model / Hermit',
  '6/3': 'Role Model / Martyr',
};

function displayProfile(chart) {
  const name = PROFILE_NAMES[chart.profile] || chart.profile;
  return `${chart.profile} — ${name}`;
}
// => "3/5 — Martyr / Heretic"

Profile vs. Type

Profile and Type are independent dimensions of the chart. Every Type can have any Profile. Type describes how a person operates energetically; Profile describes why they are here and what role they play in their relationships and community.

When building apps, combining Type and Profile creates a 60-combination matrix (5 types × 12 profiles) that enables fine-grained content personalization.

Related

• What is Human Design?
• Human Design Types Reference
• Centers Reference
• API Documentation