Ultramarine

#0D108E

General Information about Ultramarine

The color #0D108E, also known as Ultramarine, is a deep and intense shade of blue. It belongs to the blue color family and is characterized by its strong chromaticity and relatively low lightness. In the RGB color model, it is composed of 5.1% red, 6.3% green, and 55.7% blue. In the HSV color model, it has a hue of 233.7 degrees, a saturation of 90.8%, and a value of 55.7%. Ultramarine historically refers to a pigment derived from lapis lazuli, a rare and precious stone. The synthetic version of ultramarine, also known as French ultramarine, is now widely available and used in various applications, including paints, plastics, and cosmetics. This color evokes feelings of trust, loyalty, and wisdom, it is often associated with serenity and stability.

The color #0D108E, a deep ultramarine, presents significant accessibility challenges. Its low lightness value (approximately 6%) means that text rendered in this color requires extremely light foreground colors to ensure sufficient contrast. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text to meet WCAG AA standards. Using this color for interactive elements like buttons or links also necessitates careful consideration of focus states. A clear and highly visible focus indicator is crucial for users who navigate with keyboards or assistive technologies. Avoid using this color for critical information without providing alternative visual cues. Furthermore, consider the needs of users with color vision deficiencies, who may struggle to distinguish this deep blue from black or other dark colors. Always test color combinations with accessibility tools to ensure compliance and optimal usability for all users.

Shades

Digital Color Formats

RGB
13 16 142
RGB13 16 142
Red
Green
Blue
HSL
238.6 83.23% 30.39%
238.683.2330.39HSL
Hue
Saturation
Lightness
HWB
238.6 5.1% 44.31%
238.65.144.31HWB
Hue
Whiteness
Blackness
hex#0D108E
rgb13 16 142
hsl238.6 83.23% 30.39%
cmyk90.85% 88.73% 0% 44.31%
hwb238.6 5.1% 44.31%
xyz5.23 2.41 25.78
CMYK
90.85% 88.73% 0% 44.31%
90.8588.73044.31CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.23 2.41 25.78
5.232.4125.78XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

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