Ultramarine

#0B0D8D

About Ultramarine (#0B0D8D)

The hex color code #0B0D8D represents a dark shade of blue, often described as ultramarine. In the RGB color model, it is composed of 4.31% red, 5.1% green, and 55.3% blue. This means that the color is heavily weighted towards the blue end of the spectrum. In the CMYK color model, used for printing, it is composed of 92% cyan, 91% magenta, 0% yellow, and 45% black. Ultramarine is known for its rich, deep hue and is often associated with depth, stability, and sophistication. The color is often used to portray trust, security and authority. It evokes feelings of calmness and can therefore be used in many designs. This color is perceived as trustworthy and reliable and it is often used in corporate branding and webdesign.

The color #0B0D8D, a deep ultramarine, presents some accessibility challenges, especially for users with visual impairments. Its low luminance value of approximately 1.3 cd/m² means it has very poor contrast against white backgrounds, failing WCAG standards for normal text (4.5:1) and large text (3:1). To improve accessibility, it's crucial to use this color with lighter text or interface elements to ensure sufficient contrast. Consider using a color contrast checker to verify compliance with accessibility guidelines. Additionally, avoid using this color as the sole indicator of important information; supplement it with text labels or icons to ensure inclusivity for all users, including those who are colorblind.

Shades

Digital Color Formats

RGB
11 13 141
RGB11 13 141
Red
Green
Blue
HSL
239.08deg 85.53% 29.8%
239.0885.5329.8HSL
Hue
Saturation
Lightness
HWB
239.08deg 4.31% 44.71%
239.084.3144.71HWB
Hue
Whiteness
Blackness
hex#0B0D8D
rgb11 13 141
hsl239.08deg 85.53% 29.8%
cmyk92.2% 90.78% 0% 44.71%
hwb239.08deg 4.31% 44.71%
xyz-d650.05 0.02 0.25
oklch0.3042 0.1923 266.67
oklab0.3042 -0.01 -0.19
CMYK
92.2% 90.78% 0% 44.71%
92.290.78044.71CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3042 0.1923 266.67
0.30420.1923266.67LCH
Lightness
Chroma
Hue
OKLAB
0.3042 -0.01 -0.19
0.3042-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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