Red or green cast
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What's a denim cast?
A denim cast refers to the tone of the indigo shade in a particular denim. It’s the color you see in both dry denim and how it changes after wear and washing.
What makes denim have different casts?
It all comes down to how the indigo yarns are dyed. Red cast denim is dyed purely with indigo. For green cast, the dyeing process often uses an additional dye, traditionally a sulfur dye. This dye is typically applied before the indigo but can also be applied afterward, or as a combination of both. This method was likely first used to achieve darker indigo tones while using less indigo dye. However, this alteration changes the cast of the denim, transforming the naturally reddish indigo into greenish-blue tones.
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Dry red cast has a bit of a red tint to it. In the dry green cast you’ll notice a slight greenish tint.
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Red cast denim is dyed purely with indigo. For green cast, the dyeing process often uses an additional dye, traditionally a sulfur dye.
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The dry red cast fades into a clear blue when worn and washed. In the green cast the blue isn’t as clear, and it leans more towards a green-yellow shade.
