attributeddigital approximationdesign token ready
紺青Konjō
こんじょう · Prussian blue · family blue
A named color for prussian blue.
紺青 (Konjō) is catalogued here as prussian blue. Deep navy with mineral-color associations; associated with Edo-period ukiyo-e print backgrounds.
Tobunken records the underlying color/material term in the Nara-period vocabulary database derived from 『大日本古文書』; this supports historical name attestation, not measured sRGB.
Name appears in at least one CC BY-SA Wikipedia traditional Japanese color list; HEX remains a Chroma Cathay digital approximation for design use.
Traditional color names predate modern screen color spaces, so this HEX value is a design approximation rather than a material measurement.
USAGEWhere it works
Branding
Blue accent for cultural, hospitality, or editorial systems
Packaging
Seasonal goods, stationery, and boxed sets
Illustration
Pigment-aware fills, print scenes, and object studies
UI accent
Surface tint, highlight, token swatch, or subtle state color
SOURCESEvidence trail
EXPORTSCopy-ready tokens