Urobilin
HEX: #E1AD21 | Modern Palette
Color Specifications
#E1AD21
225, 173, 33
43°, 76% ,50%
0, 23, 85, 12
About Urobilin
Urobilin (#E1AD21) is a color with RGB(225, 173, 33) and HSL(43.8°, 76.2%, 50.6%). It is commonly associated with Energetic moods. In design, it fits Vivid, Warm styles and is suitable for Text, Button, Accent. Its complementary color is #2155E1, which creates strong contrast. Its triadic palette includes #21E1AD and #AD21E1. The name comes from Urobilin (German).
- HEX: #E1AD21
- RGB: 225, 173, 33
- HSL: 43.8°, 76.2%, 50.6%
- Mood: Energetic
- Style: Vivid, Warm
- Use case: Text, Button, Accent
- Complementary color: #2155E1
- Triadic colors: #21E1AD, #AD21E1
- The name comes from Urobilin (German).
Live Components
Color Palettes
Color Harmonies
Complementary
The color directly opposite on the color wheel — creates maximum contrast and vibrance.
Analogous
Colors adjacent on the wheel — naturally harmonious and pleasing to the eye.
Triadic
Three colors equally spaced 120° apart — bold, balanced, and visually rich.
Split-Complementary
Two colors flanking the complement — high contrast with less tension than full complementary.
Tetradic (Square)
Four colors at 90° intervals — rich variety, best when one color dominates.
Monochromatic
Shades and tints of the same hue — cohesive, elegant, and easy to work with.
Shades & Tints
A seamless scale of #E1AD21 from deepest shade to lightest tint.
Frequently Asked Questions
Name, History & Etymology
History
Urobilin is a yellow-brown pigment that is responsible for the color of urine and feces. It is a byproduct of the breakdown of heme, which is a component of hemoglobin in red blood cells. The process begins with the breakdown of heme into biliverdin, which is then reduced to bilirubin. Bilirubin is transported to the liver, where it is conjugated and excreted into the bile. In the intestines, bilirubin is metabolized by bacteria into urobilinogen. A portion of urobilinogen is reabsorbed and excreted by the kidneys as urobilin, while the majority is oxidized in the intestines to stercobilin, which gives feces its characteristic brown color. The term 'Urobilin' was coined by the German chemist and physician Max Jaffe in 1883, who isolated and characterized the compound.
First Recorded Use
1883
Cultural Associations
While not a term commonly used in everyday language, urobilin is a fundamental concept in medicine and biology, particularly in understanding human physiology and diagnosing certain medical conditions. Changes in urine color due to varying urobilin levels can be an indicator of health issues, prompting medical investigation. For example, very dark urine can indicate dehydration or liver problems, while very pale urine might suggest overhydration or certain kidney conditions.
Code Snippets
/* Background */
.element {
background-color: #E1AD21;
}
/* Text */
.element {
color: #E1AD21;
}
/* Border */
.element {
border: 1px solid #E1AD21;
}/* Linear gradient to complementary */
.element {
background: linear-gradient(
to right,
#E1AD21,
#2155E1
);
}
/* Radial gradient */
.element {
background: radial-gradient(
circle,
#E1AD21,
#2155E1
);
}// SCSS variable
$urobilin: #E1AD21;
// With RGB channels (useful for rgba() usage)
$urobilin-r: 225;
$urobilin-g: 173;
$urobilin-b: 33;
// Usage
.element {
background-color: $urobilin;
color: rgba($urobilin-r, $urobilin-g, $urobilin-b, 0.8);
}