Japanese Color Atlas日本色譜すおう · Sappanwood red · family red
蘇芳 (Suō) is catalogued here as sappanwood red. Tobunken supports 蘇芳 as historical dyestuff/name context. No standard measured value is tied to this color record, so HEX is a modern display approximation.
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.
These entries preserve historical material, pigment, dye, or alternate-graph evidence without treating it as a direct HEX source for this color.
SOURCE BASIS Tobunken's 彩色DB records 蘇芳 (sappanwood) among Shōsōin dyestuff purchase records.
RELATIONSHIP Sappanwood is the dye material behind 蘇芳色; mordant and concentration move it across red-to-purple.
CAVEAT Dye-material context only; the displayed HEX is a single approximation of a variable dye.
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