Cobalt
HEX: #0047AB | Modern Palette
Color Specifications
#0047AB
0, 71, 171
215°, 100% ,67%
100, 58.48, 0, 32.94
About Cobalt
Cobalt (#0047AB) is a color with RGB(0, 71, 171) and HSL(215.09°, 100%, 67.06%). It is commonly associated with Bold, Playful moods. In design, it fits Vivid, Neon styles and is suitable for Text, Button, Accent. Its complementary color is #AB6400, which creates strong contrast. Its triadic palette includes #AB0047 and #47AB00. The name comes from Kobold (German).
- HEX: #0047AB
- RGB: 0, 71, 171
- HSL: 215.09°, 100%, 67.06%
- Mood: Bold, Playful
- Style: Vivid, Neon
- Use case: Text, Button, Accent
- Complementary color: #AB6400
- Triadic colors: #AB0047, #47AB00
- The name comes from Kobold (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 #0047AB from deepest shade to lightest tint.
Frequently Asked Questions
Name, History & Etymology
History
The element Cobalt was discovered by Swedish chemist Georg Brandt in 1735. He named it after the German word 'Kobold' because miners in the Harz Mountains of Germany believed that a mischievous goblin (Kobold) was responsible for the fact that the cobalt-containing ores, while resembling copper ores, yielded no copper and also emitted noxious fumes when smelted. These ores were often associated with arsenic, which produced toxic arsenic trioxide during smelting, making the process dangerous and unproductive for copper. Brandt was able to isolate a new metal from these ores, which he identified as the source of the blue pigment used in glass and ceramics for centuries prior, but whose elemental nature was not understood.
First Recorded Use
1735 (by Georg Brandt)
Cultural Associations
Cobalt compounds have been used for centuries to produce vibrant blue colors in glass, ceramics, and paints, dating back to ancient Egyptian and Persian civilizations. The 'cobalt blue' pigment is renowned for its stability and intensity. In modern culture, cobalt is crucial in various high-tech applications, including superalloys for jet engines, magnets, and especially in rechargeable batteries (lithium-ion batteries), making it a vital component in electronics and electric vehicles. Its mining, particularly in certain regions, has raised significant ethical and environmental concerns.
Code Snippets
/* Background */
.element {
background-color: #0047AB;
}
/* Text */
.element {
color: #0047AB;
}
/* Border */
.element {
border: 1px solid #0047AB;
}/* Linear gradient to complementary */
.element {
background: linear-gradient(
to right,
#0047AB,
#FFB957
);
}
/* Radial gradient */
.element {
background: radial-gradient(
circle,
#0047AB,
#FFB957
);
}// SCSS variable
$cobalt: #0047AB;
// With RGB channels (useful for rgba() usage)
$cobalt-r: 0;
$cobalt-g: 71;
$cobalt-b: 171;
// Usage
.element {
background-color: $cobalt;
color: rgba($cobalt-r, $cobalt-g, $cobalt-b, 0.8);
}