Ecru and Khakis

Ecru noun - A very light brown.

Khakis and ecru are semantically related In some cases you can replace term "Khakis" with "Ecru", this nouns are similar.

Khakis noun - A military uniform made of khaki fabric.

Ecru and khakis are semantically related in light brown topic. Sometimes you can use "Ecru" instead a noun "Khakis", if it concerns topics such as light brown color.