Ultramarine

#180F8B

About Ultramarine (#180F8B)

Ultramarine, represented by the hexadecimal color code #180F8B, is a deep, rich blue color reminiscent of the pigment derived from lapis lazuli. It is a complex color, lying between blue and violet on the color spectrum. In the RGB color model, it is composed of 9.41% red, 5.88% green, and 54.51% blue. This composition gives it a strong blue dominance, resulting in its distinctive hue. Ultramarine is known for its historical significance, particularly its use by Renaissance painters, who prized it for its vibrant and lasting color. Today, it is widely used in various applications, including digital design, print media, and the fashion industry, to evoke feelings of depth, sophistication, and creativity. Its unique color properties make it a versatile choice for designers and artists alike.

The color #180F8B, Ultramarine, presents significant accessibility challenges due to its low luminance. With a dark hue, it offers insufficient contrast against lighter backgrounds, making text and interactive elements difficult to perceive for users with visual impairments. According to WCAG guidelines, this color fails to meet the contrast ratio requirements for normal text (4.5:1) and large text (3:1) against a standard white background. To improve accessibility, consider using a much lighter background or pairing Ultramarine with a very light color for text and important elements. Employing tools that evaluate color contrast ratios is crucial to ensure compliance with accessibility standards, benefiting all users, including those with low vision or color blindness. Proper color selection ensures a more inclusive and user-friendly web experience.

Shades

Digital Color Formats

RGB
24 15 139
RGB24 15 139
Red
Green
Blue
HSL
244.35 80.52% 30.2%
244.3580.5230.2HSL
Hue
Saturation
Lightness
HWB
244.35 5.88% 45.49%
244.355.8845.49HWB
Hue
Whiteness
Blackness
hex#180F8B
rgb24 15 139
hsl244.35 80.52% 30.2%
cmyk82.73% 89.21% 0% 45.49%
hwb244.35 5.88% 45.49%
xyz5.21 2.4 24.61
CMYK
82.73% 89.21% 0% 45.49%
82.7389.21045.49CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.21 2.4 24.61
5.212.424.61XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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