noun
mid-bright purple
A traditional Japanese color name for a medium, vivid purple. Used mainly in historical, artistic, or dyeing contexts.
この着物の半色は、江戸時代に流行した色合いです。
The mid-bright purple of this kimono is a shade that was popular in the Edo period.
紫色 is the general term for purple, while 半色 refers specifically to a mid-bright shade of purple.
The exact derivation is uncertain; the kanji 半 (half) and 色 (color) suggest a color that is halfway between other shades, possibly between light and dark purple.