noun
pale color; light color
Refers to a color that is light, faint, or washed-out. Often used for pastels or subdued tones.
彼女は薄色のワンピースを着ていた。
She was wearing a pale-colored dress.
この壁は薄色に塗り替えよう。
Let's repaint this wall a light color.
Compound of 薄 (usu-, 'thin, light') + 色 (iro, 'color'). The reading うすいろ follows standard rendaku rules.