Reference · The Chart
The Nine Centers of Human Design
Before Human Design speaks of types or strategy, it speaks of centers. The nine centers are the coloured and white shapes of the BodyGraph — the layer the whole chart is read from. This page sets out all nine in the system's own terms: what each is said to govern, what the system means by a defined versus an open centre, and how the idea that open centres are where we are "conditioned" became the foundation of its best-known doctrine. It takes no position on whether the system is true; it reports what it claims.
What a "center" is
In Human Design, a center is one of nine hubs in the BodyGraph, each associated with a cluster of themes and a claimed biological correlate. A center is defined when it is coloured in — the system reads this as a fixed, reliable, self-generated way of being in that area of life. A center is undefined or open when it is left white — read by the system not as an absence but as an openness, a place where a person is said to take in, sample, and amplify the energy of the people and environments around them.
The system presents the nine centers as a reworking of the seven-chakra scheme of yogic tradition, describing humanity as moving from a "seven-centred" to a "nine-centred" being. In that mapping the crown chakra corresponds to the Head, the third eye to the Ajna, the throat chakra to the Throat, and the lower chakras are distributed across the G, Heart, Sacral, Spleen, Solar Plexus, and Root. The centers are further grouped by function: two pressure centers (Head and Root), three awareness centers (Ajna, Spleen, Solar Plexus), four motor centers (Heart, Sacral, Solar Plexus, Root), and two — the Throat and the G — that stand in their own categories as the seats of manifestation and of identity.
The nine centers at a glance
| Center | Type | Biology (as claimed) | When defined | When open |
|---|---|---|---|---|
| Head Center | Pressure center | The pineal gland | A fixed, reliable way of being inspired and of generating the questions the mind works on | Taking in and amplifying the pressure of other people's questions; the pull to answer inquiries that are not one's own |
| Ajna Center | Awareness center | The pituitary gland | A fixed way of thinking and conceptualizing; a consistent sense of mental certainty | Mental flexibility and open-mindedness; the temptation to appear certain, or to fix onto borrowed conclusions |
| Throat Center | Communication and manifestation center | The thyroid and parathyroid glands | A fixed, reliable way of speaking and expressing; a consistent voice | Pressure to speak or act in order to be seen or heard; a changeable voice that adapts to the room |
| G Center | Identity center | The liver and the blood | A fixed sense of identity and a consistent sense of direction in life | A searching, adaptable identity; sensitivity to place and company when seeking love and direction |
| Heart Center | Motor center | The heart, stomach, gall bladder, and thymus gland | Consistent willpower and a steady sense of self-worth; the capacity to make and keep promises | The urge to prove one's worth; over-promising, and difficulty measuring one's own value |
| Sacral Center | Motor center | The ovaries and the testes | Sustainable life-force energy for work and reproduction; a body built to respond | Not knowing when enough is enough; overwork, and the taking-on of energy that is not one's own |
| Spleen Center | Awareness center | The spleen, the lymphatic system, and the immune system | Consistent instinct and a steady sense of well-being; intuition read in the present moment | Holding on to what is not good for one out of fear; heightened sensitivity to others' health and fears |
| Solar Plexus Center | Motor center and awareness center | The kidneys, pancreas, prostate, lungs, and nervous system | A consistent emotional wave; feelings that move in cycles rather than settling in the moment | Absorbing and amplifying the emotions in a room; avoiding confrontation to keep the peace |
| Root Center | Pressure center | The adrenal glands | A consistent way of handling pressure and stress; a steady, self-generated drive to act | Rushing to be free of pressure; hurrying through things to relieve stress that is not one's own |
The center types, biological associations, and paired defined/open themes are the system's own terms, described here as part of its model rather than as claims this archive evaluates. Some centers carry more than one functional label — the Solar Plexus is counted as both a motor and an awareness center, and the Root as both a pressure center and a motor.
Open centers and the "not-self"
The centers are not just descriptive furniture; they carry the load of the system's central claim about how a person is shaped. Human Design holds that the open centers are where we are conditioned — where we absorb, magnify, and mistake for our own the energy of the people and places around us. The consistent pattern that results is what the system names the not-self: the open Head chasing questions that are not its own, the open Heart forever proving its worth, the open Sacral that never knows when enough is enough.
This is the hinge that connects the centers to the rest of the system. The remedy it prescribes — living by one's type and strategy so that the open centers can be observed rather than obeyed — is the process it calls deconditioning. In other words, the whole of the not-self doctrine rests on the reading of open centers set out on this page.
“The open centers are where Human Design says we are conditioned — the reading on which its entire not-self doctrine rests.”
Where the reading came from
The centers were part of Human Design's mechanics from early on, but the framework that gives them their practical meaning — the types, strategy, and authority through which the system tells you what to do about your defined and open centers — was not. Ra Uru Hu introduced that layer in May 1997, four years into his American teaching, at a seminar in Taos, New Mexico. The account of that overlay, and of the teachers who had built the American school around the earlier material, is the subject of the archive's two documentary books, ZENO and The Voice on Ibiza.
The nine centers
- The Head Center The topmost center — described by the system as a pressure to think, wonder, and be inspired.
- The Ajna Center The mind's processing center — described by the system as where thought is shaped and certainty is felt.
- The Throat Center The center of speech and action — described by the system as where energy is turned into communication and into doing.
- The G Center The center of self — described by the system as the seat of identity, love, and direction in life.
- The Heart Center The willpower motor — described by the system as the source of ego, worth, and the drive to prove.
- The Sacral Center The life-force motor — the single center that, when defined, makes a chart a Generator.
- The Spleen Center The center of instinct — described by the system as the seat of intuition, survival, health, and fear.
- The Solar Plexus Center The emotional center — described by the system as the source of feelings, moods, and the emotional wave.
- The Root Center The base of the chart — described by the system as the pressure and adrenaline that drive a life into motion.
Sources: the nine centers, the defined/open distinction, and the not-self doctrine are described in the system's own literature, published by Jovian Archive and the IHDS; the type framework and its 1997 introduction are documented from the primary record in ZENO and The Voice on Ibiza. See also the five types and deconditioning.