shade of red, light red
纁 centers on a specific shade of red: a light, pale red, often associated with silk or fabric dyeing.
纁 combines 糸 (thread/silk) with 熏, which likely contributes the sound and may relate to the idea of dyeing or coloring silk a light red shade.
The left side 糸 suggests silk thread, and the right side 熏 looks like something being smoked or infused. Imagine silk being dyed a light red color through a gentle smoking process.
For クン, picture a silk dyer named Kun carefully preparing a light red dye: Kun -> クン, and the silk takes on the pale red shade.