Blue Delta Jean Co. goes back to the way jeans used to be made. “We’re using mostly American products. That’s unheard of in the jeans industry, especially if you look for jeans in a big-box ...

Spoiler alert: It’s not because blue matches everything (though it kinda does). “Blue jeans are blue because of the unique dye used,” says textile scientist and denim expert Melanie DiSalvo.

As jeans transitioned from workwear to fashion staples, their association with blue deepened due to cultural factors. In the mid-20th century, blue jeans became a symbol of rebellion and youth ...

Blue jeans were made with perpendicular stitches in northwest Italy, while denim was woven in chevron patterns in southern France. But the key component of the fabric’s history is its coloration.