颜色 means "color" and is the standard word used when talking about the color of objects, clothing, or anything visible. It is one of the most commonly used nouns in everyday Chinese.
你喜欢什么颜色的衣服?
nǐ xǐhuān shénme yánsè de yīfu?
What color clothes do you like?
这幅画用了很多大胆的颜色。
zhè fú huà yòng le hěn duō dàdǎn de yánsè.
This painting uses many bold colors.
秋天的树叶会变成各种颜色。
qiūtiān de shùyè huì biànchéng gè zhǒng yánsè.
In autumn, the leaves turn all kinds of colors.