• 色々いろいろ — various
• 景色けしき — scenery / landscape
• 原色げんしょく — primary color
• 特色とくしょく — characteristic color / feature
• 着色ちゃくしょく — coloring / tinting
• 色気いろけ — charm / sex appeal
• 顔色かおいろ — complexion / facial expression
• 難色なんしょく — disapproving look / reluctance
• 色彩しきさい — color / hue / tone

色 originally represented the shape of a person leaning forward or embracing, associated with passion or appearance. Over time, it evolved to mean "color" and "expression."

It’s a core part of words describing visuals, aesthetics, or emotions — and is widely used in both literal and metaphorical ways.

秋あきは 色いろがとても美うつくしいです。
Autumn colors are very beautiful.

新あたらしい色いろの服ふくを買かいました。
I bought clothes in a new color.