About this article
Medically reviewed- Written by
- Dr Paul Watson
- Medically reviewed by
- Dr Han Simpson
- Published
- June 12, 2026
- Medical review date
- September 8, 2026
- Evidence searched through
- September 8, 2026
- Next review due
- September 8, 2027
- Intended audience
- General Readers & Patients
- Geographic scope
- Worldwide
- Conflicts of interest
- None declared.
- Funding
- Website Owner
- Report a correction
- Report an error or editorial concern
- Medical disclaimer
- Read the medical disclaimer
Few things worry new parents more than what they find in their baby’s nappy. One day, the stool may be mustard yellow. The next, it might appear green, orange, or even black. Understandably, many parents search for a baby poop color chart with pictures to determine whether their baby’s stool is normal.
The good news is that babies can produce a surprisingly wide range of stool colours, many of which are completely harmless. However, certain colours may signal an underlying medical problem and should never be ignored.
This doctor-reviewed guide explains what different baby poop colours mean, when they are considered normal, and when you should seek medical advice.
Quick Answer: Baby Poop Color Chart
| Baby Poop Colour | Usually Normal? | Should You Call a Doctor? |
|---|---|---|
| Black (first few days) | Yes | No |
| Yellow | Yes | No |
| Brown | Yes | No |
| Green | Usually | Sometimes |
| Orange | Usually | Rarely |
| Red | No | Yes |
| White or Pale | No | Yes |
Important: White, pale grey, or chalky stools should always be evaluated urgently by a healthcare professional.
What Should Normal Baby Poop Look Like?
Normal baby poop changes significantly during the first few weeks of life. The appearance often depends on:
- Your baby’s age
- Whether they are breastfed or formula-fed
- Whether they have started solid foods
- Certain medications or supplements
As a doctor, one of the most common concerns I hear from parents is:
“My baby’s poop changed colour overnight. Is something wrong?”
In most cases, the answer is reassuringly simple: stool colour variation is often completely normal.
Black Baby Poop Pictures (Meconium)
The first stools passed by newborn babies are called meconium.
Meconium typically appears:
- Black
- Dark green
- Sticky
- Tar-like
This substance consists of materials swallowed during pregnancy, including:
- Amniotic fluid
- Mucus
- Skin cells
- Lanugo (fine body hair)
Most babies pass meconium within the first 24 to 48 hours after birth.
When Is Black Poop Concerning?
Black stool may require medical attention if:
- It appears after the first week of life.
- Your baby has not received iron supplements.
- The stool resembles digested blood.
Transitional Baby Poop Pictures
Between days three and five, newborn stool begins to change.
This transitional stool often appears:
- Greenish-brown
- Less sticky
- Softer than meconium
This stage indicates that feeding is becoming established.
What Does Transitional Stool Mean?
Transitional stool is generally a reassuring sign that:
- Milk intake is increasing.
- The digestive system is adapting.
- Meconium is clearing.
Yellow Baby Poop Pictures
Bright yellow stool is one of the most common and healthy findings in breastfed infants.
Normal yellow baby poop often appears:
- Mustard yellow
- Seedy or grainy
- Soft in consistency
- Mild-smelling
Is Yellow Baby Poop Normal?
Yes.
Yellow stool is usually a sign that:
- Breastfeeding is well established.
- Digestion is functioning normally.
- Nutrient absorption is occurring appropriately.
Parents often describe breastfed stool as resembling:
“Dijon mustard with seeds.”
Formula-Fed Baby Poop Pictures
Formula-fed babies often have stools that differ slightly from breastfed infants.
Formula-fed baby poop may appear:
- Tan
- Brown
- Yellow-brown
- Peanut butter-like in consistency
The stool may also have a stronger odour.
Is Formula-Fed Baby Poop Different?
Absolutely.
Differences are usually due to:
- Protein composition
- Fat content
- Digestive processing
These variations are generally normal.
Green Baby Poop Pictures
Green stool frequently causes parental anxiety.
Fortunately, green baby poop is often harmless.
Green stool may occur because of:
- Iron supplementation
- Viral infections
- Rapid intestinal transit
- Dietary changes in breastfeeding mothers
- Foremilk-hindmilk imbalance
Should I Worry About Green Baby Poop?
Usually not.
However, contact your healthcare provider if green stool is accompanied by:
- Fever
- Poor feeding
- Dehydration
- Weight loss
- Persistent diarrhoea
Orange Baby Poop Pictures
Orange stool is another colour variation that can occur normally.
Orange baby poop may result from:
- Formula feeding
- Natural digestive pigments
- Certain foods in older infants
Is Orange Baby Poop Normal?
In most cases, yes.
If your baby is otherwise well and feeding normally, orange stool alone is rarely concerning.
Red Baby Poop Pictures
Red stool requires careful assessment.
Possible causes include:
Swallowed Maternal Blood
This can occur during breastfeeding if the mother has cracked nipples.
Milk Protein Allergy
Cow’s milk protein allergy may sometimes cause:
- Blood-streaked stools
- Mucus
- Irritability
Gastrointestinal Bleeding
Rarely, red stool may indicate bleeding within the digestive tract.
Foods and Medications
In older infants, certain foods may mimic blood, including:
- Beetroot
- Tomato products
- Red food colouring
When Should You Seek Medical Advice?
Contact a healthcare professional promptly if:
- Red stool occurs repeatedly.
- Your baby appears unwell.
- The stool contains obvious blood clots.
- There is associated vomiting or lethargy.
White Baby Poop Pictures
White, pale grey, or chalk-coloured stool is never considered normal.
This colour may indicate problems involving bile flow from the liver.
Possible causes include:
- Biliary atresia
- Liver disease
- Certain metabolic disorders
Why Is White Stool Serious?
Bile pigments normally give stool its characteristic colour.
Without adequate bile reaching the intestines, stool may become:
- White
- Clay-coloured
- Pale grey
Early diagnosis of biliary atresia significantly improves outcomes.
What Should Parents Do?
If your baby’s stool appears white or pale:
Seek urgent medical advice immediately.
When Should You Call a Doctor About Baby Poop?
Contact your healthcare provider if your baby has:
- White or pale stools
- Persistent red or bloody stools
- Black stools beyond the newborn period
- Severe diarrhoea
- Signs of dehydration
- Poor feeding
- Fever
- Reduced wet nappies
- Failure to gain weight
Trust your instincts as a parent.
If something doesn’t seem right, seek professional advice.
Frequently Asked Questions
Is green baby poop normal?
Yes. Green stool is often normal, particularly in babies receiving iron supplementation.
What colour baby poop is an emergency?
White, pale grey, or chalk-coloured stools should always be assessed urgently.
Is mustard yellow baby poop normal?
Yes. Mustard yellow, seedy stools are common in healthy breastfed infants.
Why is my baby’s poop orange?
Orange stool is often caused by normal digestive pigments and is usually harmless.
Can formula change baby poop colour?
Yes. Formula-fed babies commonly produce tan, brown, or yellow-brown stools.
What does white baby poop mean?
White stool may indicate reduced bile flow and requires immediate medical evaluation.
Can foods change baby poop colour?
Yes. Once solids are introduced, foods may influence stool appearance.
Doctor’s Review
Babies produce a surprisingly wide variety of normal stool colours throughout infancy. While yellow, green, brown, and orange stools are often harmless, parents should remain vigilant for red, black beyond the newborn period, or white stools.
If you are ever uncertain about your baby’s symptoms, seek advice from your healthcare provider. Early assessment provides reassurance when everything is normal and ensures prompt treatment when needed.
Medical Disclaimer
This article is intended for educational purposes only and should not replace professional medical advice, diagnosis, or treatment. Always consult your doctor, health visitor, or paediatric healthcare provider regarding concerns about your child’s health.