pro tip: what do you say instead? I gotcha.

In Ye Olde Medieval Fantasy Dayes, everybody’s layer against skin (shirt tunic or shift) is gonna be linen. it’s almost never wool except stockings or hose (like pant legs). Say “undyed cloth” if you wanna make them sound simple and peasanty. Comment on how you can tell it wasn’t made for them (the fit is off) and has had probably eight owners before.

Outer clothing is gonna be either wool, or a blend called Linsey-woolsey, and again you could say Undyed, but dyes are not only common they are CHEAP and relatively easy. (innerwear is often left undyed or bleached to white because it gets washed to heck- like beaten by a wooden stick on a stone by the river- and dye would just fade out a lot so why bother. Ths is also why innerwear has ties, rarely buttons, unless you are so rich you have people doing your washing delicately because they’re hired to do only that. Buttons would get broken in the washing)

A poorer person is often seen in “russet”, a kind of rusty orange-brown color. Purple was famously reserved for royalty in many times and places, but its also just hard to do. We see a lot more magentas and fuschias for nobles or common middle class folks than we ever see of Purple- and not many of those. Deep blue was more likely on very rich people, but a light blue was common for even poorer folks. Yellow was popular with everyone, and so was green, and many shades of reds, including the color we now call orange (they did not- this is why redheads are called redheads and not orangeheads). Your vision of everyone in very drab brown and mud colors is from Hollywood- most medieval-ren folks have clothing with colors. Sometimes garish colors, to the modern eye. Traffic cone Orange and acid green was a popular combo in the 13th century.