1. Light to medium browns

• Beige brown

• Caramel

• Tan

• Warm nude

• Often used in: foundations, concealers, nude lipsticks

• Undertone: yellow or peach

2. Medium browns

• Mocha

• Chestnut

• Cocoa

• Toffee

• Common in: liquid lipsticks, contour, bronzer

• Undertone: neutral to warm

3. Deep browns

• Espresso

• Chocolate

• Mahogany

• Walnut

• Used for: eyeliners, brow products, deep lipstick shades

• Undertone: cool (ashy) or warm (reddish)

4. Undertone-based descriptions (very important)

• Warm brown golden, caramel, red-brown

• Cool brown taupe, ash brown

• Neutral brown balanced, true brown

5. Finish terms (for liquid cosmetics)

• Matte brown

• Glossy brown

• Satin brown

• Sheer brown

If you want, tell me which product you mean (lipstick, foundation, eyeliner, nail polish, etc.) and what its for (skin tone match, fashion shade, product naming, or color code), and Ill narrow it down precisely