He was elegantly dressed in a grey suit, blue shirt, and paisley tie.

他优雅地穿着一件灰色西服，蓝衬衣，系着佩斯利涡旋花纹领带。

《柯林斯英汉双解大词典》

There was a small patch of blue in the grey clouds.

乌云中透着一小块蓝天。

《柯林斯英汉双解大词典》

Osmium (Os) : The densest of natural elements-twice as dense as lead-this blue-grey metal finds a home in applications where hardness and durability are essential.

锇：是一种密度大的自然元素——其密度是铅的两倍——这种蓝灰色的金属在需要硬度和稳定性的应用领域大放异彩。

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He is described as 5ft 10in tall, of medium build, with blue-grey eyes.

BBC: Owain Roberts

As they age, the heads and legs become white and the fleece assumes a colour ranging from blue-grey to light grey.

BBC: Protected status for Lakeland Herdwick sheep

Following the blue and grey lines from left to right, we start with equatorial countries and gradually move north and south.

FORBES: The correlation is there.