Birth color by year
Ask for the colour of a birth year and you get several answers, because there is more than one rule.
A birthday colour usually means one of two questions, and they are not the same. The first is what colour does this date carry - a calendar question, answered the same way by everyone who has fixed a palette. The second is what colour does this number make - and that one has no agreed answer at all, because it depends entirely on the rule the tool chose.
The tools that take a year fall into three families. None of them is a standard, and two tools given the same birth date will happily return two different colours. That is not a bug in either one; it is what happens when a number is turned into a colour by a rule somebody invented.
The three kinds of rule
Read the digits
Some tools take the digits of the date and read them as colour channels - two digits for the day, two for the month, two for the year, mapped onto red, green and blue. It is simple and it is repeatable, and it means 1998 and 2008 are as far apart in colour as 03 and 13 are.
Run a hash
Others put the whole date, year included, through a hash function and turn the result into a hue. The colour is deterministic - the same date always gives the same result - but nothing about the colour means anything beyond 'this is where the number landed'.
Read the sky
A third family skips the year's digits and uses where the planets were: Sun, Moon, Rising and Venus signs are each given a colour and shown together as a palette. That needs a birth time and place as well as a date, and it is a different kind of claim - not a colour for a date, but a palette for a chart.
Why this site does not ask for a year
This site's palette is a calendar: all 366 days of a leap year, each with one colour, so a birthday returns the same colour every year of your life. Adding the year would break exactly that - your colour would change when the year rolled over, and the calendar would no longer be a calendar.
So the finder asks for a month and a day and stops there. If you want a colour that does move with a year, the honest thing is to pick one of the three rules above, know that you picked it, and expect a different tool to disagree.
What to use instead
Questions people ask about birth colors and years
What color is my birth year?
There is no single answer, because no standards body publishes one. A tool that reads the date's digits, a tool that runs a hash and a tool that reads your birth chart each produce a defensible colour from the same year, and they will not agree with each other. Pick the rule you like and treat the colour as that tool's answer, not as a fact about the year.
Why do two colour tools give me different colours for the same birthday?
Because they are answering different questions. One maps a month and a day to a fixed colour; another turns the whole date, year included, into a number and then into a hue. Different inputs and different rules give different colours, and neither tool is wrong on its own terms.
Does my birth year change the colour of my birthday?
Not on this site. The palette covers 366 days, so a date keeps its colour every year. Tools that include the year will give you a different colour for each year, which is a property of their rule rather than of the date.
Can I get a colour for a full date, year and all?
Not from this site, and it is a deliberate choice rather than a missing feature: a calendar that shifted with the year would stop being a calendar. What you can get here is the colour for the day itself, with its hex code, palette and reading, and it will be the same one next year.
Find the color for your birthday
Enter a birth month and day and the page opens with that date's color, its hex code, its palette and its reading.