The source is where a study starts.

It is not what the study concludes.

Why this page exists

Some of our studies begin with a historical color relationship. Others begin with something noticed on a street, in a room, or in a previous study that raised a question and left it unanswered.

Where a study begins matters, so we record it. But a starting point is not an authority, and it is not a finding. What we conclude, we conclude from our own arrangements — and we say so on the study itself, including when the answer is still not yet.

How we work with a source

What we do

  • Take a relationship as a starting point
  • Measure our own colors to a documented standard
  • Build our own arrangements and hold our own constants
  • Record what we changed and what we kept
  • Name the source plainly

What we don't

  • Reproduce a published collection's selection
  • Reuse its numbering or its codes
  • Copy its translations, names or scans
  • Present a historical source as evidence for our own claims
  • Imply endorsement by anyone

Study lineage

Each study records where it started.

Area establishes hierarchy. Attention doesn't always obey it.

Observed from — the historic color studies of Sanzo Wada.

Tested through — three arrangements holding everything constant except which color occupies which region, then the same arrangement at three sizes.

What we found — not yet. Open and collecting.

Enter study

Inspired by the historic color studies of Sanzo Wada.

utusori is not affiliated with, endorsed by, or connected to any publisher or estate.