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The Color of Breastmilk and What it Means

Color Variations in Breastmilk

If pumping or expressing milk, you may occasionally notice that your milk is not always white. While this can be confusing or even upsetting to some, it is actually quite normal to see color variances, and rarely is it cause for concern for baby ingesting or an indication of something wrong.

Gold or Yellow

Colostrum is the first milk the mother makes, available upon birth of the baby. For this reason, it is much thicker and loaded in immune developing components designed for a newborn, which gives it a golden color. Hence the nickname for breastmilk: Liquid Gold.

The winter and holiday seasons are a great opportunity to remind breastfeeding mothers about oimmune-boosting factors in breastmilk that will carry their babies throughout all of the family and social gatherings. Milk composition in terms of these immune factors update in real time, and when a nursing child is sick and actively fighting off something, can be visualized if pumped or expressed. The milk will change slightly yellow or golden, almost as if reverting back to colostrum from the first days postpartum.


Milk transitioning from colostrum to mature milk will sometimes have an orange hue up to 14 days postpartum. Diets high in carotene, like carrots and sweet potatoes, may also attribute this color change.

Clear or Blue

Milk composition in terms of macronutrients vary slightly throughout the day, having more volume in the early morning, and gradually fattier as the day progresses. The morning milk, along with foremilk, the first amount of milk ejected during a feed, can be clear or light blue in appearance. This can also be seen if milk is left to sit and separate.

White - Creamy White

The color most think of in regard to milk. This is the color of mature, fully-transitioned milk. Fat is emulsified, or mixed in, with the other macronutrients.


In a recent study, blue green algae supplements, commonly used by vegans and vegetarians, were found to taint breastmilk a blue-green color. No known side effects were found.

Pink or Brown

This may be caused by one of several factors. Artificial coloring or potent natural coloring, such as beets, can alter the color of breastmilk. Pink or brown may also be a sign of blood, which is still safe to ingest, but warrants investigating. Blood could be from increased blood vessel use in the breast tissue, nipple damage, or on the rare occasion, tumors.


Medications like minocycline (which is safe to take for short periods while nursing) can make milk appear black.


National Institute of Health, LactMed

All content published on the Motif Medical site is credited for information purposes only. This information should not substitute as medical advice, diagnosis, or treatment. Always consult your doctor or qualified health professional with any questions regarding the health of you or your baby.


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