Guide to Color of Urine

WRITTEN BY

The Levels Team

Updated: 05/22/2025|12 min read

Summary

Urine color is a diagnostic marker that can range from clear to dark brown and may include tints like pink, red, blue, or green. The color of urine provides information about hydration status, diet, medications, and potential underlying health conditions. 

Why It Matters

Urine color is mainly determined by the concentration of urochrome, a pigment produced during the breakdown of hemoglobin from red blood cells. 

The shade and intensity of urine color directly reflect several bodily processes. For instance, when you're dehydrated, your kidneys conserve water by producing more concentrated urine, causing a darker yellow to brown color. On the other hand, when you're well-hydrated, your urine becomes more dilute and pale in color.

The presence of blood, excess proteins, or other substances in your urine can also impact color. Some changes to color are typically of little concern, like the bright yellow color caused by B vitamins or a red tint from eating beets. But other color changes can signal conditions like liver dysfunction, kidney problems, kidney stones, urinary tract infections (UTIs), or even bladder cancer.

The color of urine is generally just one clue about your urine, and a diagnosis is usually made from other markers in the urinalysis or further testing.

Associated Symptoms

Urine color itself is a laboratory finding rather than a medical condition. However, abnormal colors may be associated with various health issues, each with its own symptoms.

Common symptoms that may indicate conditions associated with dark yellow to amber urine:

• Thirst: Increased desire for fluids can result from the body's response to dehydration
• Dry mucous membranes: Dry mouth and lips may be due to decreased overall body hydration
• Fatigue: General weakness and tiredness may result from altered fluid balance affecting cellular function
• Dizziness: Lightheadedness potentially caused by reduced blood volume from dehydration
• Decreased urination: Reduced urine output can occur as the body conserves water

Common symptoms that may indicate conditions associated with red or pink urine:

• Dysuria: Painful urination can accompany urinary tract infections that may cause blood in urine
• Flank pain: Discomfort in the lower back or side that may indicate kidney stones causing bleeding
• Urinary urgency: Sudden need to urinate suggesting possible bladder inflammation
• Fever: Elevated temperature that may occur with infections causing blood in urine
• Muscle pain: Severe muscle aches that can occur with rhabdomyolysis, a condition where damaged muscle tissue releases proteins like myoglobin into the blood, creating tea or cola-colored urine

Common symptoms that may indicate conditions associated with brown or tea-colored urine:

• Jaundice: Yellowing of skin and eyes from liver conditions that can also affect urine color
• Pruritus: Itchy skin that may accompany liver disease affecting bile metabolism
• Abdominal discomfort: Right upper quadrant pain that may indicate liver problems affecting urine color
• Dark stool: Clay-colored bowel movements can accompany liver conditions that alter urine color

Common symptoms that may indicate conditions associated with unusual colors (blue, green):

• Urinary burning: Discomfort during urination that may accompany infections with unusual urine colors
• Frequent urination: Increased voiding can occur with urinary tract infections
• Abdominal or back pain: Discomfort that may indicate kidney infection or other urinary tract issues

It's important to understand that many factors can cause urine color changes, including foods, medications, hydration status, and underlying health conditions. While some color changes are harmless, persistent unusual colors without clear explanation warrant medical evaluation, especially when accompanied by other symptoms.

Clinical Ranges

Lab Reference Range: Yellow

Lifestyle Factors That Can Impact It

Activities that may impact the color of urine include:

• Fluid intake: Fluid intake directly affects urine concentration and color. Adequate hydration typically produces light yellow to clear urine, while dehydration results in darker, more concentrated urine.
• Diet: Many foods can alter urine color. Beets, blackberries, and rhubarb can cause red or pink urine, while asparagus can cause green tinting. Foods high in B vitamins may cause bright yellow urine.
• Exercise habits: Intense physical activity can lead to darker urine due to dehydration and increased muscle breakdown products.  
• Alcohol and caffeine: These substances have diuretic effects (increasing urination) that can lead to dehydration and darker urine.  

Other Factors That Can Impact It

Genetic Conditions

• Wilson's disease (dark or tea-colored tint)
• Porphyria (red/purple/brown color)
• Familial benign hypercalcemia (affects concentration; can cause blue or green urine).

Medical Conditions

• UTI: Sometimes it can cause red-tinged urine from blood and inflammation.
• Kidney stones: Can cause pink or red tinted urine caused by irritation and bleeding.
• Hepatitis: Liver inflammation causes increased bilirubin, turning urine dark brown or tea-colored.
• Bladder cancer: May cause persistent red or rust-colored urine.
• Rhabdomyolysis: Breakdown of damaged muscle tissue releases myoglobin into the bloodstream, creating tea or cola-colored urine.

Medications and Supplements

• Phenazopyridine (brand name Azo) (orange)
• Vitamin B supplements (and multivitamins with B) (bright yellow)
• Methylene Blue (blue/green)
• Iron supplements (dark brown)
• Rifampin (orange-red)
• Some antidepressants (green or blue tint)
• Senna laxatives (red-brown)
• Propofol (green/blue)
• Metronidazole (dark/brown)

Individual Factors

• Age: Kidneys become less efficient at diluting urine.
• Pregnancy: Increased protein and blood volume can affect appearance.

Testing Accuracy and Stability

Factors That Can Affect the Accuracy of Your Test 

• Time since last void (extended time 6+ hours results in darker urine)
• Certain foods may affect color
• Testing in the morning may lead to darker urine

How It Relates to Other Markers

Your healthcare providers may order other tests to look at factors that may be contributing to the abnormal appearance of urine. Some other tests they might look at include:

• Various markers in urinalysis: Can identify infection and other conditions.
• Blood tests: Kidney and liver function tests help correlate urine appearance changes with organ function and systemic conditions.
• Imaging studies: When structural problems are suspected, especially those with a persistent abnormal appearance, ultrasound or CT scans may be needed.
• Metabolic panel: Helps identify underlying metabolic conditions that might affect urine color.

Follow-up Considerations

If the appearance of your urine is not normal, your provider may work with you on steps to address the issue, and may consider these follow-ups. You should always talk to your doctor if you have medical concerns or questions.

When Re-Testing May be Appropriate

• After completing antibiotics for an infection
• Following dietary changes
• When starting new medications
• If symptoms persist despite treatment

Additional Testing Your Doctor May Consider

• 24-hour urine collection
• Urine culture for suspected infection
• Metabolic panel
• Kidney function tests

When Additional Care May be Warranted

• Blood in urine
• Dark brown or cola-colored urine
• Blue or green urine without medication cause
• Persistent unusual coloration
• Color changes accompanied by pain
• Very dark or unusual colors not explained by diet or medications

Bibliography