130 years of accumulated data, three peer-reviewed studies, and a theory of change grounded in evidence — not aesthetics.
Synthesizing 15 years of intervention data with a comprehensive literature review, The Pink Paper makes the evidence-based case that pink — specifically, a narrow range of warm pinks in the 350–360nm wavelength reflection range — produces the most consistent positive effects on mood, social interaction, and perceived safety across diverse populations.
“We didn’t set out to find pink. We set out to find what works. The data pointed to pink.”— Dr. Tomás Arriaga, Director of Research
The paper was covered by leading architecture, design, and urbanism publications. It became the intellectual foundation for the Central Park Pathways Initiative.
The Chromatic Intervention Pilot painted interior and exterior surfaces of 12 residential buildings in Brooklyn and Queens in carefully researched color palettes. Conducted in partnership with the Kessler School of Public Health and the Breitman Institute for Environmental Health. Published in the Journal of Urban Health Research, results showed statistically significant improvements in self-reported well-being, a 12% reduction in maintenance complaints, and measurable reductions in cortisol levels among residents of painted buildings compared to unpainted controls.
Dr. Ruth Cheng-Solomon’s landmark study documented the dramatic reduction in color variety in New York’s built environment between 1920 and 1960. The report identified what she called “chromatic deficit” — the measurable narrowing of the color palette of entire neighborhoods as older painted buildings were replaced with glass and concrete. Received respectful Times coverage and has since been cited in over 200 academic papers.
The Society’s founding research project. Six residential buildings on Hester Street painted in carefully selected palettes, with resident health outcomes tracked over three years. Methodology was crude by modern standards, but findings were suggestive enough to attract serious scientific attention. The earliest known longitudinal study of color’s impact on urban health outcomes. Original patient logs preserved in the Society’s archive at the City Archive.
Every year since 1923, trained surveyors have documented the dominant color palette of a rotating sample of New York City blocks. The methodology has evolved — from hand-painted swatches to Munsell color chips to spectrophotometric measurement to digital imaging with machine-learning color extraction — but the core dataset is remarkably consistent.
The digitized data, published as the NYC Color Atlas through a partnership with the Aldrich Institute of Design, is an open-access, block-by-block visualization of color in New York’s built environment from 1923 to the present. It is the most-used open-access resource the Society produces.
The Central Park Pathways Initiative puts our findings to the test at unprecedented scale.
This is a fictional nonprofit.
The New York Chromatic Society is a fictional nonprofit used as a teaching aid in the How to Raise Money fundraising workshop.