露草色Tsuyukusa-iro
つゆくさいろ · Dayflower blue · family blue
A named color for dayflower blue.
露草色 (Tsuyukusa-iro) is catalogued here as dayflower blue. Soft blue from dayflower/aigami colorant with documented Edo-period print usage; the dye is fugitive and substrate-dependent, and no per-record physical-sample measurement is attached, so HEX remains a display approximation.
Conservation-science studies publish spectral/reflectance evidence for the related pigment or dye family. This supports the material context, not a per-record measurement; the displayed HEX remains a digital approximation.
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.