Healthy urine is pale yellow to light gold, similar to the color of straw or light lemonade. That color comes from a pigment called urochrome, which your kidneys produce as they filter waste from your blood. How concentrated your urine is, what you’ve eaten, and what medications you take can all shift that color across a surprisingly wide spectrum.
Pale Yellow to Clear: Well Hydrated
When you’re drinking enough water, your urine will be a pale, almost transparent yellow with little to no smell. Completely clear urine isn’t dangerous, but it usually means you’re drinking more water than your body actually needs. There’s no benefit to pushing your intake that far, and in rare cases, consistently overhydrating can dilute the sodium in your blood to unhealthy levels.
The sweet spot is a light straw color. If you’re seeing that in the toilet bowl most of the day, your hydration is on track.
Dark Yellow to Amber: Time to Drink More
As urine gets more concentrated, it deepens from medium yellow to dark amber. A slightly darker shade just means you need a glass of water. But once your urine looks like apple juice or darker, you’re genuinely dehydrated and should drink two to three glasses of water fairly quickly. Very dark, strong-smelling urine in small amounts is a sign of significant dehydration, especially in hot weather or after heavy exercise.
Keep in mind that your first urine of the morning is almost always darker. That’s normal after hours without fluid. What matters more is the color you see throughout the rest of the day.
Neon Yellow From Vitamins
If your urine is an almost fluorescent, highlighter-bright yellow, you’ve probably taken a B-complex supplement or a multivitamin. Riboflavin (vitamin B2) is the main culprit. Your body absorbs what it needs and flushes the excess through your kidneys, and that excess is intensely yellow. It’s completely harmless. Vitamins A and B12 can also push urine toward a deeper yellow-orange.
Orange Urine
Orange urine has a few common explanations. Dehydration is the simplest: very concentrated urine can look more orange than yellow. Certain medications also cause it, including phenazopyridine (a common over-the-counter urinary pain reliever), some laxatives, sulfasalazine (used for inflammatory bowel conditions), and certain chemotherapy drugs.
Orange urine can also signal a problem with your liver or bile ducts, especially if your stools are lighter in color at the same time. When bile pigments end up in your urine instead of your digestive tract, the result is an unmistakable deep orange or brownish-orange.
Red or Pink Urine
Red urine gets people’s attention, and for good reason. But the cause isn’t always blood. Beets, rhubarb, and blackberries can all tint urine pink or reddish. This is so common with beets that it has its own informal name: beeturia. Some medications turn urine red or reddish-orange too, including rifampin (a tuberculosis drug), phenazopyridine, and senna-based laxatives.
When the color does come from blood, the list of possible causes is longer. Urinary tract infections, kidney infections, kidney or bladder stones, and an enlarged or inflamed prostate can all cause visible blood in urine. Intense exercise, particularly contact sports and long-distance running, is another recognized trigger. In rarer and more serious cases, blood in the urine can be a sign of kidney disease or cancers of the bladder, kidney, or prostate. Even a single episode of visibly red or pink urine that you can’t trace to food or medication is worth getting checked out.
Brown or Cola-Colored Urine
Dark brown urine that looks like tea or cola has two particularly important causes. The first is liver disease, where bile pigments or old blood cells are being filtered through the kidneys. The second is rhabdomyolysis, a condition where damaged muscle tissue breaks down and releases its contents into the bloodstream. Rhabdomyolysis typically follows unusually intense exercise, a crush injury, or severe overheating, and it comes with muscle pain or weakness that feels disproportionate to the activity. If you notice cola-colored urine alongside muscle cramps or unusual fatigue, that combination needs prompt medical attention because the muscle proteins can damage your kidneys.
Several medications can also darken urine to brown, including certain antibiotics (metronidazole, nitrofurantoin), anti-malaria drugs, muscle relaxers, seizure medications, and cholesterol-lowering statins.
Blue or Green Urine
Blue or green urine is rare and almost always caused by a medication or dye. Amitriptyline (an antidepressant), cimetidine (used for acid reflux), triamterene (a diuretic), and indomethacin (an anti-inflammatory) can all produce a greenish-blue tint. Asparagus occasionally gives urine a faint greenish hue in some people, along with its more famous effect on urine smell. Certain bacterial infections of the urinary tract can also produce green pigments, though this is uncommon.
Cloudy or Foamy Urine
Color isn’t the only thing worth noticing. Clarity matters too. Cloudy urine has several possible explanations, and the most common is simply a urinary tract infection. UTIs cause white blood cells and sometimes small amounts of blood to collect in urine, giving it a milky or hazy look, often alongside burning, urgency, or pelvic discomfort.
Dehydration alone can make urine look cloudy because the higher concentration of waste gives it a murky appearance. Diet plays a role as well. People who eat a lot of fruits and vegetables (including vegans) tend to have more alkaline urine, and higher pH levels make urine appear cloudier.
Foamy urine that looks like it has small bubbles on the surface can point to protein leaking into the urine, which is sometimes an early sign of kidney disease. Cloudy urine paired with flank pain and vomiting may indicate kidney stones. In men, prostate infections or inflammation can also cause cloudiness by allowing blood and cellular debris into the urinary stream.
What Changes Are Worth Watching
A one-time color change that lines up with something you ate, a new supplement, or a medication you just started is rarely a concern. The changes worth paying attention to are the ones you can’t explain: persistent red or pink urine without beets or medication, brown or cola-colored urine especially with muscle pain, or cloudy urine that comes with fever, pain, or a foul smell. Consistently foamy urine is also worth mentioning at your next appointment, since it can reflect protein loss from the kidneys before other symptoms appear.