Daily color calculator

Pick a date. The calculator builds a YYYYMMDD seed, takes that number modulo 12, and reads a color. 12 August 2026 is 20260812 mod 12 = 0 and Red. 15 May 1990 is index 3 and Green. The same date always the same color.

A date-modulo-12 function, entertainment, not a reading. Day card: daily tarot. Cycle: personal year. Article: Daily color.

Input

Result

Pick a date to see the daily color.

How it works

Daily color is a calendar game. Seed = year × 10000 + month × 100 + day, the YYYYMMDD number. Index = seed mod 12. Palette 0-11: Red, Orange, Gold, Green, Sky blue, Indigo, Violet, Rose, Turquoise, Silver, White, Amber.

12 August 2026: 20260812 mod 12 = 0, Red. 15 May 1990: 19900515 mod 12 = 3, Green. 1 January 2025: 20250101 mod 12 = 5, Indigo. 15 June 2024: index 11, Amber. 21 March 2026: index 1, Orange. 10 October 2010: index 2, Gold.

A color from the date, always the same for that day. There is no draw. Clock time, a name, and a zodiac sign do not enter. It is not daily tarot and not a personal year.

One field: date as YYYY-MM-DD. Click Calculate. You can check the same date on paper: build YYYYMMDD and divide with remainder by 12.

Twelve colors cycle. Neighboring days need not have neighboring colors, because the seed jumps at month end.

Treat the result as a motif for play or a workshop. Do not read it as a fortune, a mood, or a shopping tip.

Formula

seed = year × 10000 + month × 100 + day (YYYYMMDD as a number)

index = seed mod 12

color = palette[index] (12 fixed color labels).

How to use

  1. Pick the date in the date field, YYYY-MM-DD. The hint is 2026-08-12.
  2. Click Calculate. The result is the color from (YYYYMMDD mod 12).
  3. Check 12 August 2026: seed 20260812, remainder 0, Red.
  4. For another index, open 15 May 1990: remainder 3, Green.
  5. Compare daily tarot or personal year if you want a second motif from the date.

A date modulo 12 and a fixed color

12 August 2026 is seed 20260812, remainder 0 and Red. 15 May 1990 is index 3 and Green. Same date, same color.

Red
Remainder 0 from the YYYYMMDD seed. 12 August 2026. Not a mood forecast.
seed
The number 20260812 from the date. Modulo 12 is the color index. 15 May 1990 is Green.

Suggested uses

  • A quick color motif for a chosen calendar day.
  • Practice modulo arithmetic on a YYYYMMDD number.
  • Compare several dates and their 0-11 indexes.
  • Creative workshop: color as a day label (entertainment).
  • Confirm the same date always returns the same color.
  • Pair with daily tarot as a second date motif.

Examples

Example 1

  • Date: 2026-08-12

Red

20260812 mod 12 = 0 → Red.

Example 2

  • Date: 2025-01-01

Indigo

20250101 mod 12 = 5 → Indigo.

Example 3

  • Date: 2024-06-15

Amber

20240615 mod 12 = 11 → Amber.

Example 4

  • Date: 2026-03-21

Orange

20260321 mod 12 = 1 → Orange.

Example 5

  • Date: 1990-05-15

Green

19900515 mod 12 = 3 → Green.

Example 6

  • Date: 2010-10-10

Gold

20101010 mod 12 = 2 → Gold.

Related calculators

Daily tarot

From the date you compute one of the 22 Major Arcana cards.

Use calculator →

Personal year number

You take birth month and day plus a chosen calendar year, reduce the parts, and settle on a 1-9 cycle.

Use calculator →

Moon phase

Pick a date.

Use calculator →

Biorhythms

From birth date to a chosen day you compute three sine waves: 23-day physical, 28-day emotional, 33-day intellectual.

Use calculator →

All esoteric calculators

Frequently asked questions

What color is 12 August 2026?

Red. 20260812 mod 12 = 0, first color in the palette.

What about 15 May 1990 and 1 January 2025?

1990-05-15 is Green (index 3). 2025-01-01 is Indigo (index 5).

Is this a scientific forecast?

No. It is the remainder of the date number divided by 12. Not day energy and not a reading.

Is tomorrow the next color?

Not always. The seed grows by 1 inside a month, but month and year jumps break a simple run.

Does clock time change the color?

No. The full calendar date counts. The same date always the same index.

How many colors are there?

Twelve: Red (0) through Amber (11). 15 June 2024 is Amber.

How is this different from daily tarot?

Daily tarot maps the seed to a card. Here the seed maps to a color. Separate tables.

What about 21 March 2026 and 10 October 2010?

2026-03-21 is Orange (index 1). 2010-10-10 is Gold (index 2). Same date, same color.

Is this a zodiac sign?

No. The Sun sign uses day and month in the tropics. Here the whole date modulo 12.

Is a blank date Red?

No. Without a date there is no seed. Pick a day on the calendar.

Knowledge sources

Digit sums of a date or a name are a numerology convention. Wikipedia treats that as tradition, not as science.

Page updated in 2026.