The I Ching and the 64 Hexagrams

The I Ching — usually translated as the Book of Changes — is one of the oldest books in the world, a Chinese divination and wisdom text whose roots reach back more than three thousand years. At its heart sits a set of 64 symbols called hexagrams, each a stack of six lines that describes a particular situation, energy, or turning point in life. When Ra Uru Hu received the Human Design System in 1987, those same 64 hexagrams became the 64 gates of the bodygraph. The mapping is exact: hexagram 1 is gate 1, hexagram 2 is gate 2, all the way to 64. If you understand where the gates come from, you understand a huge part of where Human Design itself comes from.

What the I Ching is#

The I Ching began as an oracle. You would ask a question, generate a hexagram (traditionally by casting yarrow stalks or, later, tossing coins), and look up what that symbol had to say. Over centuries, layers of commentary turned it from a simple fortune-telling device into a profound philosophical text about change — the idea that everything is in constant flux, and that wisdom lies in reading where you are in a cycle and acting accordingly.

That word, change, is the key. The I Ching does not describe fixed fates. It describes moving patterns: how a situation tends to unfold, what energy is rising, what is fading. Human Design inherits this directly. Your gates are not labels stamped on your personality; they are archetypal energies with their own movement, their own gift and their own shadow.

Hexagrams are built from broken and solid lines#

Every hexagram is made of six horizontal lines, read from the bottom up. Each line is one of two kinds:

• a solid (unbroken) line — ——— — the yang principle: active, creative, firm, expressive.
• a broken line — — — — the yin principle: receptive, yielding, supportive, reflective.

This is a binary code, the oldest one we know of. Two possible lines, stacked six high, give you exactly 2⁶ = 64 unique combinations — no more, no fewer. That is why there are 64 hexagrams, and therefore 64 gates. The whole system is built on a simple on/off duality repeated six times.

The hexagram above is gate 1, known in the I Ching as The Creative (Ch'ien): six solid yang lines, pure creative force. Its mirror image, gate 2 (The Receptive, K'un), is six broken yin lines. Between those two poles — pure yang and pure yin — sit the other 62 hexagrams as every possible mixture of the two.

Two trigrams in every hexagram#

There is a layer between the line and the whole hexagram: the trigram. A trigram is a stack of just three lines, and there are eight of them (2³ = 8). Each trigram is a classical element of nature — Heaven, Earth, Thunder, Water, Mountain, Wind, Fire, Lake.

Every hexagram is two trigrams stacked together: a lower (inner) trigram and an upper (outer) trigram. The traditional meaning of a hexagram grows out of how its two trigrams relate — Fire over Water, Mountain over Thunder, and so on. This pairing of an inner and outer force is one reason the gates feel so layered: each one already contains a small dialogue between two natures.

Pick a lower trigram (row) and an upper trigram (column) and the cell where they meet is the hexagram — and therefore the Human Design gate — they form. Hover any number for the gate's name, or click through to its full page.

Show

NumbersHexagrams

lowerupper →	☰Heaven	☱Lake	☲Fire	☳Thunder	☴Wind	☵Water	☶Mountain	☷Earth
☰Heaven	1	43	14	34	9	5	26	11
☱Lake	10	58	38	54	61	60	41	19
☲Fire	13	49	30	55	37	63	22	36
☳Thunder	25	17	21	51	42	3	27	24
☴Wind	44	28	50	32	57	48	18	46
☵Water	6	47	64	40	59	29	4	7
☶Mountain	33	31	56	62	53	39	52	15
☷Earth	12	45	35	16	20	8	23	2

How the I Ching became the 64 gates#

Ra Uru Hu took the 64 hexagrams and placed them around a circle called the Rave Mandala, then mapped that circle onto the wheel of the zodiac and the planets. As a planet moves through the sky, it passes through these 64 hexagrams in turn. Wherever your planets sat at your birth — and at your Design time, 88 days earlier — determines which gates are activated in your chart.

So the translation looks like this:

I Ching	Human Design
Hexagram	Gate
The six lines of a hexagram	The six lines of a gate (your profile is built from two of them)
64 hexagrams total	64 gates total
Yang (solid) / yin (broken)	The underlying binary that shapes each gate's character
The Book of Changes	Gates as living, moving energies with a gift and a shadow

The order of the gates around the wheel is not simply 1, 2, 3. It follows the King Wen sequence, the classical arrangement of the 64 hexagrams that the I Ching has used for millennia, which Ra preserved when he laid out the mandala. This is why gate numbers seem to "jump" as you read around a chart — the wheel is keeping faith with an ancient ordering rather than counting upward.

The six lines carry into your chart#

Because each gate is a six-line hexagram, every gate activation in your chart lands on a specific line, 1 through 6. Those lines have their own keynotes — for example the Investigator (line 1), the Hermit (line 2), the Martyr (line 3), the Opportunist (line 4), the Heretic (line 5), and the Role Model (line 6). Two of these line positions — from your Sun and Earth at birth — combine to form your profile, the costume your personality wears through life.

In other words, the I Ching's structure does not stay abstract. The same broken-and-solid logic that defines a hexagram three thousand years ago is what gives your gates their flavour, and what gives your profile its shape today.

Why this lineage matters#

Knowing that the gates are the I Ching does three useful things:

• It grounds the gates in meaning. Each gate carries thousands of years of interpretation about what that situation in life is like — wisdom you can lean on when you explore your own gates.
• It explains the "changing" quality. Gates are not static traits. Like the Book of Changes, they describe energy in motion, with a higher and a lower expression you can grow into.
• It connects to genetics. The 64-fold binary of the I Ching famously mirrors the 64 codons in human DNA — the three-letter "words" the genetic code uses to build proteins. Human Design leans on this parallel, treating the 64 gates as a kind of map between an ancient symbolic code and the code that builds the body.

From a 3,000-year-old oracle of stacked lines to the gates lighting up in your bodygraph, it is the same 64 patterns the whole way through.