Ultramarine

#181289

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #181289, is a deep, rich blue hue often associated with sophistication and depth. It is a dark shade, possessing a strong presence and the ability to evoke feelings of trust and stability. In the RGB color model, #181289 is composed of 9.41% red, 7.06% green, and 53.73% blue. This specific combination creates a unique and distinctive shade of blue that stands out from lighter or more common variations. Ultramarine's historical significance lies in its use as a pigment derived from lapis lazuli, making it a highly prized and expensive color in art and design. Today, synthetic versions allow for broader and more accessible use across various applications.

The color #181289, also known as Ultramarine, presents several accessibility considerations for web development. Due to its dark nature, it's crucial to use it with light-colored text to ensure sufficient contrast. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text (14pt bold or 18pt regular) as per WCAG guidelines. Using a color contrast checker is essential to verify compliance. Avoid pairing it with other dark colors, as this can lead to readability issues. When used for interactive elements like buttons or links, ensure that hover and focus states provide clear visual cues, such as a change in brightness or the addition of an outline, to aid users with visual impairments or those using assistive technologies. Proper implementation of these guidelines ensures an inclusive experience for all users.

Shades

Digital Color Formats

RGB
24 18 137
RGB24 18 137
Red
Green
Blue
HSL
243.03 76.77% 30.39%
243.0376.7730.39HSL
Hue
Saturation
Lightness
HWB
243.03 7.06% 46.27%
243.037.0646.27HWB
Hue
Whiteness
Blackness
hex#181289
rgb24 18 137
hsl243.03 76.77% 30.39%
cmyk82.48% 86.86% 0% 46.27%
hwb243.03 7.06% 46.27%
xyz5.11 2.43 23.87
CMYK
82.48% 86.86% 0% 46.27%
82.4886.86046.27CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.11 2.43 23.87
5.112.4323.87XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

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