darker
adj. 更暗的；更黑的；更深的（dark的比较级）
例句
Darker colours are more practical and don't show stains.
深色不显脏，更实用。
《牛津词典》
In the diet, it is generally true that the darker the fruit the higher its iron content.
在饮食中，水果颜色越深，其铁含量就越高，这通常是正确的。
《柯林斯英汉双解大词典》
There was a darker side to his nature.
他本性中还有阴险的一面。
