Enter your date — year included — and see the hue that belongs to it. Same date, same color. Always.
Every date has a color. Type your birthday — year and all — and Hueday returns a unique hex code that belongs to that exact day. Same date always gives the same color. It's math, not astrology.
Every color has a permanent link you can share, a four-swatch palette built from color theory, and a downloadable share card. Bring a second birthday to see two colors side by side.
Your date never leaves your browser — but any link or share card you post publicly contains the date in the URL. Keep that in mind when sharing.
A birthday color is a unique hue tied to a specific date. Hueday maps every date — including the year — to its own hex code using a deterministic hash. The same date always produces the same color, but dates one day apart produce wildly different colors.
Yes. Every component of the date feeds the hash: year, month, and day. Two people born on the same day of the year in different years get different colors. This is the main thing Hueday does that older birthday color sites don't.
Your date is hashed into HSL values: a hue from the full wheel, a saturation between 30 and 95, and a lightness between 20 and 86. The range is wide enough that every color is meaningfully different from its neighbors, while still being presentable.
No. Everything runs in your browser. There is no account, no upload, no tracking of your date. If you share a link, the date is in the URL you share — that's up to you.
Yes. Every color has a permanent link — copy it and send it anywhere. You can also download a share card as a PNG in four sizes: Link card (1200×630), Square (1080×1080), Wallpaper (1920×1080), or Story (1080×1920).
The four palette swatches are color-theory derivatives of your hero color: the complementary color (hue + 180°), two analogous colors (hue ± 30°), and the triadic color (hue + 120°). They're useful for design, mood boards, or picking an outfit.
Yes. Open Actions and pick Compare to add a second date. The viewport splits — your color on one side, theirs on the other — with both hex codes visible. Great for partners, siblings, or seeing how far apart two dates land on the color wheel.
Over 560,000 distinct combinations across the color space Hueday uses. For a realistic range of birthdays — roughly 46,000 dates across 125 years — collisions are rare and adjacent dates always look meaningfully different.
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