Ultramarine Blue

HEX: #4166F5 | Modern Palette

On White
4.73:1
PASS
On Black
4.44:1
FAIL

Color Specifications

HEX
#4166F5
RGB
65, 102, 245
HSL
227°, 73% ,96%
CMYK
73.47, 58.37, 0, 3.92

About Ultramarine Blue

Ultramarine Blue (#4166F5) is a color with RGB(65, 102, 245) and HSL(227.67°, 73.47%, 96.08%). It is commonly associated with Playful moods. In design, it fits Cool styles and is suitable for Text, Button, Background. Its complementary color is #F5D041, which creates strong contrast. Its triadic palette includes #F54166 and #66F541. The name comes from ultramarinus (Latin).

  • HEX: #4166F5
  • RGB: 65, 102, 245
  • HSL: 227.67°, 73.47%, 96.08%
  • Mood: Playful
  • Style: Cool
  • Use case: Text, Button, Background
  • Complementary color: #F5D041
  • Triadic colors: #F54166, #66F541
  • The name comes from ultramarinus (Latin).

Live Components

LIGHT
DARK
System Notification Box

Color Palettes

Ultramarine Blue #4166F5 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.
 
 
 
ULTRAMARINE BLUE
 
Neutral + Accent Four near-neutral tones grounded by a saturated accent — clean and versatile for UI.
 
 
ULTRAMARINE BLUE
 
 
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

Ultramarine Blue #4166F5 pairs with #F5D041 as its complementary color, and #F54166 and #66F541 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.

ULTRAMARINE BLUE
Analogous

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

ULTRAMARINE BLUE
Triadic

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

ULTRAMARINE BLUE
Split-Complementary

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

ULTRAMARINE BLUE
Tetradic (Square)

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

ULTRAMARINE BLUE
Monochromatic

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

ULTRAMARINE BLUE

Shades & Tints

The shade and tint range for Ultramarine Blue #4166F5 moves from dark #010618 tones through the base color to lighter #E7EBFE tones, making it useful for depth, hierarchy, and background variation.

ULTRAMARINE BLUE

Color Characteristics

Mood
Playful
Style
Cool
Use case
Text Button Background

Accessibility Simulation

Deuteranopia #5D5DF5
Protanopia #6363F5
Tritanopia #008484
Achromatopsia #737373

Frequently Asked Questions

Ultramarine Blue (#4166F5) is a color with RGB(65, 102, 245) and HSL(227.67°, 73.47%, 96.08%).

#4166F5 pairs strongly with #F5D041 as its complementary color. It can also be used with neutral tones for balanced UI and design layouts.

#4166F5 is suitable for Text, Button, Background and works well with Cool styles.

#4166F5 is commonly associated with Playful.

The name Ultramarine Blue is linked to ultramarinus from Latin, meaning beyond the sea.

Name, History & Etymology

Origin Word ultramarinus
Meaning beyond the sea
Language Latin
First Recorded Use Medieval

History

Ultramarine blue was originally derived from lapis lazuli, a metamorphic rock found primarily in Afghanistan. Its name reflects its origin, as the pigment was imported to Europe 'from beyond the sea.' It was the most expensive blue pigment available during the Renaissance, often reserved for the most important figures in paintings, such as the Virgin Mary. Due to its cost and rarity, artists often used cheaper blues like azurite for less prominent areas. A synthetic version, French Ultramarine, was developed in the early 19th century, making the color widely accessible and affordable.

First Recorded Use

13th century

Cultural Associations

In Western art, ultramarine blue is strongly associated with divinity, royalty, and truth. Its use in religious art, particularly for the robes of the Virgin Mary, imbued it with spiritual significance. Its vibrant, deep hue has also made it popular in modern art and design, conveying a sense of depth, calm, and sophistication. It is a primary color in many color systems and is widely recognized for its distinct, rich blue tone.

Similar Named Colors
Royal Blue #4169E1 ΔE 2.79
Brandeis Blue #0070FF ΔE 5.06
Very Light Blue #6666FF ΔE 5.06
Han Blue #446CCF ΔE 5.24

Code Snippets

/* Background */
.element {
    background-color: #4166F5;
}

/* Text */
.element {
    color: #4166F5;
}

/* Border */
.element {
    border: 1px solid #4166F5;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #4166F5,
        #FCF9EE
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #4166F5,
        #FCF9EE
    );
}

// SCSS variable
$ultramarine-blue: #4166F5;

// With RGB channels (useful for rgba() usage)
$ultramarine-blue-r: 65;
$ultramarine-blue-g: 102;
$ultramarine-blue-b: 245;

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