This is the 9116th most frequent Japanese word.
灰色
Gray.
In this sentence, "灰色" is used as a descriptive adjective to describe the color of the sky, indicating a neutral to gloomy ambiance.
空は灰色になって雨が降りそうです。
The sky has turned grey and it looks like it might rain.
Here, "灰色" is used to describe the color of a suit, emphasizing its subtlety and formal impression.
この灰色のスーツは落ち着いた印象を与えます。
This grey suit gives a calm and composed impression.
In this example, "灰色" is referred to conceptually to discuss its universal and versatile characteristics as a color.