True Blue

HEX: #0073CF | Modern Palette

On White
4.82:1
PASS
On Black
4.35:1
FAIL

Color Specifications

HEX
#0073CF
RGB
0, 115, 207
HSL
206°, 100% ,81%
CMYK
100, 44.44, 0, 18.82

About True Blue

True Blue (#0073CF) is a color with RGB(0, 115, 207) and HSL(206.67°, 100%, 81.18%). It is commonly associated with Playful moods. In design, it fits Neon, Cool styles and is suitable for Text, Button, Background. Its complementary color is #CF5C00, which creates strong contrast. Its triadic palette includes #CF0073 and #73CF00. The name comes from True Blue (English).

  • HEX: #0073CF
  • RGB: 0, 115, 207
  • HSL: 206.67°, 100%, 81.18%
  • Mood: Playful
  • Style: Neon, Cool
  • Use case: Text, Button, Background
  • Complementary color: #CF5C00
  • Triadic colors: #CF0073, #73CF00
  • The name comes from True Blue (English).

Live Components

LIGHT
DARK
System Notification Box

Color Palettes

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

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 #0073CF from deepest shade to lightest tint.

Color Characteristics

Mood
Playful
Style
Neon Cool
Use case
Text Button Background

Accessibility Simulation

Deuteranopia #6262D0
Protanopia #6D6DCF
Tritanopia #008383
Achromatopsia #727272

Frequently Asked Questions

True Blue (#0073CF) is a color with RGB(0, 115, 207) and HSL(206.67°, 100%, 81.18%).

#0073CF pairs strongly with #CF5C00 as its complementary color. It can also be used with neutral tones for balanced UI and design layouts.

#0073CF is suitable for Text, Button, Background and works well with Neon, Cool styles.

#0073CF is commonly associated with Playful.

The name True Blue is linked to True Blue from English, meaning A shade of blue perceived as genuine, steadfast, or archetypal..

Name, History & Etymology

Origin Word True Blue
Meaning A shade of blue perceived as genuine, steadfast, or archetypal.
Language English
First Recorded Use Late 17th Century

History

The term 'true blue' gained prominence in Scotland during the Covenanter movement (1638-1688), where blue was the color of the Covenanters, symbolizing their steadfast adherence to Presbyterianism. The phrase then spread to England, becoming associated with unwavering loyalty, particularly to the Tory party. By the 18th and 19th centuries, 'true blue' began to describe a pure, unadulterated blue color, distinct from other blue variations.

First Recorded Use

The phrase 'true blue' emerged in the late 17th century, initially referring to a person of unwavering loyalty, particularly in political or religious contexts. Its application to a specific color shade followed this metaphorical usage.

Cultural Associations

'True blue' is deeply embedded in Western culture as an idiom for loyalty, authenticity, and reliability, often used to describe a person's character or allegiance. In sports, many teams adopt 'true blue' as a rallying cry, signifying dedication and team spirit. The color itself is often associated with trustworthiness and stability.

Similar Named Colors
Bright Navy Blue #1974D2 ΔE 1.14
French Blue #0072BB ΔE 2.87
Spanish Blue #0070B8 ΔE 3.24
Ocean Boat Blue #0077BE ΔE 3.46

Code Snippets

/* Background */
.element {
    background-color: #0073CF;
}

/* Text */
.element {
    color: #0073CF;
}

/* Border */
.element {
    border: 1px solid #0073CF;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #0073CF,
        #FFCA9F
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #0073CF,
        #FFCA9F
    );
}

// SCSS variable
$true-blue: #0073CF;

// With RGB channels (useful for rgba() usage)
$true-blue-r: 0;
$true-blue-g: 115;
$true-blue-b: 207;

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