Ultramarine

#0A0B8C

General Information about Ultramarine

The color #0a0b8c, also known as Ultramarine, is a deep and intense shade of blue in the RGB color space. It is characterized by its strong blue hue with subtle hints of violet, contributing to its rich and sophisticated appearance. In the RGB color model, #0a0b8c is composed of 3.92% red, 4.31% green, and 54.9% blue. This composition results in a color that evokes feelings of calmness, depth, and trust. Ultramarine has been historically significant, derived from the precious mineral lapis lazuli, making it a highly valued pigment in art and design. Its association with royalty and spirituality further enhances its prestigious reputation, making it a popular choice for creating a sense of luxury and sophistication.

The hex color #0a0b8c, also known as Ultramarine, presents significant accessibility challenges, particularly in text-based applications. Its dark hue results in a low contrast ratio against standard light backgrounds, such as white (#ffffff). This low contrast can make it difficult for users with visual impairments, including those with low vision or color blindness, to read text rendered in this color. According to WCAG (Web Content Accessibility Guidelines), sufficient contrast is crucial for readability. To ensure accessibility, it is recommended to pair #0a0b8c with very light colors like #ffffff, #f0f0f0, or #e5e5e5 for text. When used for interactive elements such as buttons or links, developers should provide clear visual cues, like borders or changes in appearance on hover, to indicate interactivity, thereby helping users perceive the element's function regardless of their visual abilities. The minimum contrast ratio should be 4.5:1 for normal text and 3:1 for large text.

Shades

Digital Color Formats

RGB
10 11 140
RGB10 11 140
Red
Green
Blue
HSL
239.54deg 86.67% 29.41%
239.5486.6729.41HSL
Hue
Saturation
Lightness
HWB
239.54deg 3.92% 45.1%
239.543.9245.1HWB
Hue
Whiteness
Blackness
hex#0A0B8C
rgb10 11 140
hsl239.54deg 86.67% 29.41%
cmyk92.86% 92.14% 0% 45.1%
hwb239.54deg 3.92% 45.1%
xyz-d650.05 0.02 0.25
oklch0.3009 0.1925 266.5
oklab0.3009 -0.01 -0.19
CMYK
92.86% 92.14% 0% 45.1%
92.8692.14045.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3009 0.1925 266.5
0.30090.1925266.5LCH
Lightness
Chroma
Hue
OKLAB
0.3009 -0.01 -0.19
0.3009-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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