Cool Black

HEX: #002E63 | Modern Palette

On White
13.37:1
PASS
On Black
1.57:1
FAIL

Color Specifications

HEX
#002E63
RGB
0, 46, 99
HSL
212°, 100% ,38%
CMYK
100, 53.54, 0, 61.18

About Cool Black

Cool Black (#002E63) is a color with RGB(0, 46, 99) and HSL(212.12°, 100%, 38.82%). It is commonly associated with Bold moods. In design, it fits Vivid, Cool styles and is suitable for Text, Button, Accent. Its complementary color is #633500, which creates strong contrast. Its triadic palette includes #63002E and #2E6300. The name comes from Cool Black (English).

  • HEX: #002E63
  • RGB: 0, 46, 99
  • HSL: 212.12°, 100%, 38.82%
  • Mood: Bold
  • Style: Vivid, Cool
  • Use case: Text, Button, Accent
  • Complementary color: #633500
  • Triadic colors: #63002E, #2E6300
  • The name comes from Cool Black (English).

Live Components

LIGHT
DARK
System Notification Box

Color Palettes

Cool Black #002E63 is used in Monochromatic, Neutral + Accent, Analogous, 3 + 1 + 1 palettes, giving designers ready-made combinations for backgrounds, surfaces, accents, and interface elements.

Monochromatic Five tones of the same hue — a reliable scale for backgrounds, surfaces, and text.
 
 
 
 
Neutral + Accent Four near-neutral tones grounded by a saturated accent — clean and versatile for UI.
 
 
 
 
Analogous Five hues drifting across a 60° arc — naturally harmonious and pleasing to the eye.
 
 
 
 
 
3 + 1 + 1 Three analogous base colors, one complementary accent, one dark anchor — bold yet balanced.
 
 
 
 
 

Color Harmonies

Cool Black #002E63 pairs with #633500 as its complementary color, and #63002E and #2E6300 in triadic combinations. These harmony relationships help create balanced color combinations for UI, branding, and design work.

Complementary

The color directly opposite on the color wheel — creates maximum contrast and vibrance.

COOL BLACK
Analogous

Colors adjacent on the wheel — naturally harmonious and pleasing to the eye.

COOL BLACK
Triadic

Three colors equally spaced 120° apart — bold, balanced, and visually rich.

COOL BLACK
Split-Complementary

Two colors flanking the complement — high contrast with less tension than full complementary.

COOL BLACK
Tetradic (Square)

Four colors at 90° intervals — rich variety, best when one color dominates.

COOL BLACK
Monochromatic

Shades and tints of the same hue — cohesive, elegant, and easy to work with.

COOL BLACK

Shades & Tints

The shade and tint range for Cool Black #002E63 moves from dark #000C1A tones through the base color to lighter #E6F1FF tones, making it useful for depth, hierarchy, and background variation.

COOL BLACK

Color Characteristics

Mood
Bold
Style
Vivid Cool
Use case
Text Button Accent

Accessibility Simulation

Deuteranopia #262663
Protanopia #2B2B63
Tritanopia #003838
Achromatopsia #2F2F2F

Frequently Asked Questions

Cool Black (#002E63) is a color with RGB(0, 46, 99) and HSL(212.12°, 100%, 38.82%).

#002E63 pairs strongly with #633500 as its complementary color. It can also be used with neutral tones for balanced UI and design layouts.

#002E63 is suitable for Text, Button, Accent and works well with Vivid, Cool styles.

#002E63 is commonly associated with Bold.

The name Cool Black is linked to Cool Black from English, meaning A descriptive term for a dark, desaturated color that evokes a sense of coolness or sophistication, often with a blue or green undertone..

Name, History & Etymology

Origin Word Cool Black
Meaning A descriptive term for a dark, desaturated color that evokes a sense of coolness or sophistication, often with a blue or green undertone.
Language English
First Recorded Use Late 20th Century - Early 21st Century

History

The concept of 'cool' and 'warm' colors has existed in art theory for centuries, but applying 'cool' directly to 'black' as a common descriptor is a more modern phenomenon. Traditional color theory often places black as an achromatic (neutral) color, but in practice, blacks can have discernible undertones. With the advent of digital color models (RGB, CMYK) and the ability to precisely specify colors, designers began to intentionally create and name 'cool blacks' (blacks with blue or green undertones) and 'warm blacks' (blacks with red or yellow undertones) to achieve specific aesthetic effects. #002e63 is a prime example of a color that, while technically a very dark blue, functions visually as a 'cool black' due to its extreme darkness.

First Recorded Use

The exact first use is difficult to pinpoint as 'Cool Black' is more of a descriptive phrase than a formally named color in most historical contexts. Its usage likely emerged with the rise of digital color specification and graphic design, where designers needed to differentiate various shades of black. The specific hex code #002e63 is a very dark blue, often perceived as a 'cool black' due to its depth and blue undertone.

Cultural Associations

In design and fashion, 'cool black' often conveys sophistication, modernity, and a certain understated elegance. It can be associated with technology, luxury goods, and minimalist aesthetics. Unlike a pure black, which can sometimes feel stark or harsh, a cool black like #002e63 offers a subtle depth and richness that can be perceived as more refined or less absolute. It's frequently used in branding for companies wanting to project a serious yet contemporary image.

Similar Named Colors

Dark Midnight Blue #003366 ΔE 1.81
Prussian Blue #003153 ΔE 4.35
Royal Blue #002366 ΔE 4.58
Catalina Blue #062A78 ΔE 4.81

Code Snippets

/* Background */
.element {
    background-color: #002E63;
}

/* Text */
.element {
    color: #002E63;
}

/* Border */
.element {
    border: 1px solid #002E63;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #002E63,
        #C66A00
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #002E63,
        #C66A00
    );
}

// SCSS variable
$cool-black: #002E63;

// With RGB channels (useful for rgba() usage)
$cool-black-r: 0;
$cool-black-g: 46;
$cool-black-b: 99;

// Usage
.element {
    background-color: $cool-black;
    color: rgba($cool-black-r, $cool-black-g, $cool-black-b, 0.8);
}