Ultramarine

#180992

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #180992, is a deep, rich blue hue historically derived from the mineral lapis lazuli. In color theory, it is categorized as a cool color, often associated with feelings of calmness, sophistication, and depth. Its usage dates back centuries, where it was highly prized by artists for its vibrant and lasting pigment. The color name itself translates to 'beyond the sea,' reflecting its origin from overseas trade routes. Today, synthetic versions of ultramarine are widely available, offering similar visual properties without the high cost of the natural pigment. Ultramarine blue continues to be a significant color in art, design, and various cultural expressions.

The color #180992, a deep ultramarine, presents significant accessibility challenges. Its low luminance value of 4 means that it requires very light text or interface elements to ensure sufficient contrast for readability. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is needed for normal text and 3:1 for large text. Using this color as a background with dark text would fail accessibility standards, making it difficult for users, especially those with visual impairments, to perceive content effectively. Designers should carefully consider the color pairings and text sizes to meet accessibility requirements. For improved accessibility, it's advisable to use lighter shades or tints of ultramarine or pair it with much lighter colors such as white or very pale yellow to ensure adequate contrast.

Shades

Digital Color Formats

RGB
24 9 146
RGB24 9 146
Red
Green
Blue
HSL
246.57 88.39% 30.39%
246.5788.3930.39HSL
Hue
Saturation
Lightness
HWB
246.57 3.53% 42.75%
246.573.5342.75HWB
Hue
Whiteness
Blackness
hex#180992
rgb24 9 146
hsl246.57 88.39% 30.39%
cmyk83.56% 93.84% 0% 42.75%
hwb246.57 3.53% 42.75%
xyz5.66 2.46 27.37
CMYK
83.56% 93.84% 0% 42.75%
83.5693.84042.75CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.66 2.46 27.37
5.662.4627.37XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025