Ultramarine

#180A91

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #180A91, is a deep and rich shade of blue. Historically, it was derived from the mineral lapis lazuli, making it one of the most expensive and prized pigments. Its name literally means 'beyond the sea,' as lapis lazuli had to be imported to Europe from mines in Afghanistan. This color is often associated with royalty, intelligence, and creativity. In modern color theory, #180A91 sits firmly in the blue portion of the color spectrum, leaning toward the indigo end. Due to its dark nature, it is considered a cool color and evokes feelings of calmness and serenity.

The color #180A91, a deep ultramarine, presents significant accessibility challenges, especially when used as text on a white or light background. Its low luminance value results in very poor contrast, falling far short of WCAG (Web Content Accessibility Guidelines) recommended ratios for both normal and large text. This can make content extremely difficult, if not impossible, for users with visual impairments to read. To improve accessibility, consider using #180A91 sparingly for decorative elements only. When using it for text or interactive elements, pair it with a very light color such as white (#FFFFFF) or light yellow (#FFFFE0) to ensure sufficient contrast. Tools like contrast checkers can help you verify compliance with accessibility standards. Avoid using it for critical information or actions without careful consideration of contrast ratios.

Shades

Digital Color Formats

RGB
24 10 145
RGB24 10 145
Red
Green
Blue
HSL
246.22 87.1% 30.39%
246.2287.130.39HSL
Hue
Saturation
Lightness
HWB
246.22 3.92% 43.14%
246.223.9243.14HWB
Hue
Whiteness
Blackness
hex#180A91
rgb24 10 145
hsl246.22 87.1% 30.39%
cmyk83.45% 93.1% 0% 43.14%
hwb246.22 3.92% 43.14%
xyz5.6 2.46 26.97
CMYK
83.45% 93.1% 0% 43.14%
83.4593.1043.14CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.6 2.46 26.97
5.62.4626.97XYZ
X
Y
Z

Alternative colors

Applications

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