café au lait vs ecru

café au lait

noun

  • A light coffee colour. 

  • A mixture of coffee and hot milk. 

  • Coffee and hot milk served in separate jugs as a breakfast drink. 

ecru

noun

  • A beige colour. 

adj

  • Of a beige colour. 

How often have the words café au lait and ecru occurred in a corpus of books? (source: Google Ngram Viewer )