Japanese Color Atlas日本色譜にいろ · Lead red · family red
丹色 (Tan-iro) is catalogued here as lead red. Lead-oxide red used on early shrine pillars; classical pigment.
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 丹 (red lead, Pb₃O₄) in Nara-period documents such as the Hōryū-ji inventory.
RELATIONSHIP 丹 is the historical lead-oxide pigment behind the color name 丹色; the name long outlived the specific material.
CAVEAT Lead-red pigment context only. It is not a measured value, and 丹色 today is a digital approximation.
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