Ultramarine

#180B90

General Information about Ultramarine

The color #180B90, commonly known as Ultramarine, is a deep and rich shade of blue that evokes feelings of serenity, depth, and sophistication. It belongs to the blue color family and is characterized by its strong saturation and relative darkness. In the RGB color model, #180B90 is composed of 9.41% red, 4.31% green, and 56.47% blue. Its CMYK values are 0.83, 0.92, 0.00, 0.44, which indicate its composition in terms of cyan, magenta, yellow, and black inks. Ultramarine has historical significance, as it was originally derived from the precious gemstone lapis lazuli, making it one of the most expensive and highly prized pigments used by Renaissance artists. The name 'ultramarine' literally means 'beyond the sea,' reflecting its origin from stones imported into Europe from distant lands. Today, it is synthetically produced, making it more accessible and affordable.

The color #180B90, also known as Ultramarine, presents some accessibility challenges, especially concerning text readability. Its dark hue results in a low contrast ratio against lighter backgrounds, which can make text difficult to read for users with visual impairments. To ensure accessibility, it's crucial to pair this color with very light text colors, such as white or very light shades of yellow or green, to achieve a contrast ratio that meets WCAG (Web Content Accessibility Guidelines) standards. For instance, a contrast ratio of at least 4.5:1 is recommended for normal-sized text and 3:1 for large text. Avoid using #180B90 for interactive elements or important information without careful consideration of color contrast. Providing alternative color schemes or allowing users to customize colors can also enhance accessibility. Using contrast checking tools during development is essential to verify that color combinations meet accessibility requirements.

Shades

Digital Color Formats

RGB
24 11 144
RGB24 11 144
Red
Green
Blue
HSL
245.86 85.81% 30.39%
245.8685.8130.39HSL
Hue
Saturation
Lightness
HWB
245.86 4.31% 43.53%
245.864.3143.53HWB
Hue
Whiteness
Blackness
hex#180B90
rgb24 11 144
hsl245.86 85.81% 30.39%
cmyk83.33% 92.36% 0% 43.53%
hwb245.86 4.31% 43.53%
xyz5.53 2.45 26.57
CMYK
83.33% 92.36% 0% 43.53%
83.3392.36043.53CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.53 2.45 26.57
5.532.4526.57XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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