Most people get their undertone wrong. Here's why it matters.

If you've ever taken a color quiz and gotten a result that didn't quite feel right — or gotten two completely different answers from two different quizzes — there's a good chance your undertone was misidentified from the start.

Undertone is the foundation of the whole system. Get it wrong, and everything built on top of it will feel slightly off.

This free guide walks you through what undertone actually is (and what people confuse it with), why the most common tests lead people astray, and a simple method to figure yours out at home in about five minutes.

In the guide:

What undertone actually means — and how it's different from overtone (most explanations get this backwards). Why online color quizzes so often get it wrong. A quick, reliable test you can do right now with stuff you already have. Where undertone fits into the bigger picture of finding your color season.

It's short, it's free, and it's the first thing I wish someone had handed me when I started down this rabbit hole.