A 46-member open data consortium
The color of a letter, across 30 languages.
We pool data from 46 researchers studying grapheme-color synesthesia — the experience of perceiving written language as colored. Our open dataset is free to use (with attribution).
387,146
color associations
1,923
synesthetes
30
languages
46
members
Latest working paper
SynesthesiaColorPicker: an open-source color picker for online synesthesia research
SynesthesiaColorPicker is a free, mobile-friendly web tool for collecting grapheme-color associations without custom coding. It integrates with Qualtrics and LabJS/Open Lab, providing a standardized color-selection interface adaptable to any lab. The paper validates the tool as a measurement instrument for online synesthesia research.
Journal article · 2026
Behavior Research Methods · Vol. 58(3)
