The short answer: red, dark red, brown, pink and even black are all normal period colours. The shade mostly tells you how fresh the blood is and how fast it's flowing. Grey is the one colour that isn't normal, and orange with a bad smell or itching also needs a check-up.
Why period blood changes colour
Period blood isn't only blood. It's a mix of blood, tissue from the womb lining and vaginal fluid. When it flows quickly, it comes out bright red. When it moves slowly, it has time to react with oxygen and darkens, the same way a cut apple turns brown. That's why your flow often starts or ends darker than it is on day two.
The colour chart
| Colour | What it usually means | When it's normal | When to see a doctor |
|---|---|---|---|
| Bright red | Fresh blood flowing quickly | Days 1–3, your heaviest days | If it continues well past 7 days, or appears between periods |
| Dark red | Blood that sat a little longer in the womb | Mornings, or after lying down for a while | Rarely a concern on its own |
| Brown | Older blood that has darkened | First and last days, or spotting just before a period | Brown spotting between periods that keeps happening |
| Black | Very old, slow-moving blood | Start or end of a period | With a bad smell, fever or pain, or if you might have a forgotten tampon |
| Pink | Blood diluted by vaginal fluid | Light days, spotting around ovulation | Pink spotting often, or a very light period for months in a row |
| Orange | Blood mixed with discharge | Occasionally, with no other symptoms | With itching, a fishy smell or unusual discharge |
| Grey | Not a period colour | Never | Always. It can point to an infection such as bacterial vaginosis, or, in pregnancy, a miscarriage |
Bright red: your flow is in full swing
This is the colour most people expect. It shows blood is leaving the womb quickly, so you'll usually see it on your heaviest days. Bright red bleeding between periods or after sex isn't a period, though, and should be checked.
Dark red and brown: older blood
If you notice a darker colour first thing in the morning, that's simply blood that collected while you were lying down. Brown at the very start or end of a period is just as normal. It's the slow trickle before your flow picks up, or the last of the lining clearing out.
Brown spotting a few days before your period is also common. It becomes worth discussing with a doctor when it happens in the middle of your cycle month after month.
Black: alarming to see, usually harmless
Black blood is blood that has taken even longer to leave the body. It's usually nothing to worry about. The exception is black or dark discharge with a strong smell, fever or itching. That can mean an infection, or a tampon or other object that was left inside. See a doctor promptly if so.
Pink: light flow
Pink usually means a small amount of blood has mixed with vaginal fluid. You may see it at the start or end of a period, or as light spotting around ovulation. A period that is pink and very light for several months in a row is worth mentioning to your doctor, as weight changes, very intense exercise or hormonal changes can affect your flow.
Orange: check for other symptoms
Orange-tinged blood often comes from blood mixing with discharge, and on its own it's not a worry. If it comes with itching, burning, a fishy or unpleasant smell, or discharge that looks different from usual, it may be an infection. Get it checked rather than self-treating.
Grey: see a doctor
Grey or off-white discharge with a fishy smell is a common sign of bacterial vaginosis, a vaginal infection that is easy to treat. If you are pregnant and see grey tissue or discharge with bleeding, contact your doctor straight away.
Other things worth noticing
Colour is only one clue. Mention these to your gynaecologist too:
- Clots larger than about 2.5 cm, or many clots every period
- Periods lasting more than 7 days
- Bleeding between periods, after sex, or after menopause
- A strong or unusual smell
How colour shows up on your period products
On a pad or period panty, blood looks darker than it does on toilet paper, because the absorbent layers concentrate the colour. A brown or black patch on a period panty is usually just older blood. A few practical tips:
- Rinse in cold water first. Hot water sets blood stains. A cold rinse before washing keeps your Fabpad period panties looking fresh.
- Use a liner on spotting days. For brown or pink spotting before your period, a panty liner is enough.
- Keep it gentle. For everyday freshness, a mild, pH-balanced intimate wash on the outside only is plenty. Never wash inside the vagina.
Frequently asked questions
Why is my period brown on the first day? Because the flow is still slow. The first blood to leave has had more time to darken. It usually turns red within a day.
Is black period blood dangerous? Usually not. It's old blood. See a doctor if it comes with a bad smell, fever, itching or pain.
Does period blood colour show if I'm healthy? It gives a few clues but isn't a test. How long your period lasts, how heavy it is and how regular your cycle is tell your doctor more.
Can watery pink blood mean I'm pregnant? Light pink or brown spotting can occasionally be implantation bleeding, around the time a period is due. If you've had unprotected sex, take a pregnancy test.
Related reading
- Heavy Periods: How Much Bleeding Is Too Much?
- Blood Clots in Your Period: Normal or Not? The ₹10 Coin Test
- Bleeding Again After Your Period Ended? What It Means, by Timing
This article is for general information and doesn't replace advice from your doctor.
Sources: NHS: Periods, Columbia Asia Hospital: What does your period blood colour mean?