noun, noun which may take the genitive case particle 'no'
lead color; lead-gray
Describes a dull, heavy gray like the metal lead. Often used for overcast skies, tired complexions, or somber atmospheres.
The sky was overcast with a leaden gray.
His face was a tired, leaden color.
Compound of 鉛 (なまり, 'lead') and 色 (いろ, 'color'). The reading なまり is the native Japanese word for lead.