Every birth date has a color.

Tanjoshoku (誕生色, literally "birth color") is a Japanese concept that assigns one unique color to each of the 366 days of the year, February 29th included. Each color has a name, a meaning, and a set of personality traits said to reflect people born on that day.

The system was popularized by the book 366色の誕生色 (366 Colors of Birth), which paired every date with traditional Japanese color names. Many drawn from nature, the seasons, and centuries-old dyeing traditions.

Unlike astrology or birthstones, Tanjoshoku is purely visual. A color that is, quite literally, yours.

Japan has one of the world's richest color traditions. Classical Japanese has over 400 named colors. Many are untranslatable, each tied to a season, a plant, or a specific moment in time. Colors like Sakura (cherry blossom pink), Hanada (bright indigo), and Kurenai (deep crimson) are not just hues. They carry history.

Tanjoshoku draws on this heritage, pairing each birth date with a color that feels intentional, not arbitrary. When you find your color, you're touching something that has meant something in Japan for centuries.

We took the original 366-color system and brought it to the rest of the world. English, Indonesian, and Japanese. Every color page has the traditional Japanese name, romanization, meaning, and keywords.

Color data comes from birthday-color.cafein.jp, faithful to the original book. HEX, RGB, HSB, and CMYK values included, so you can take your color anywhere.