Black Rock

#0A0B37

General Information about #0A0B37

The hex color #0A0B37, often referred to as 'Black Rock', is a very dark shade of blue-purple. In the RGB color model, it is composed of 3.92% red, 4.31% green, and 21.57% blue. This composition gives it a deep, mysterious quality. In the CMYK color model, it consists of 82% cyan, 80% magenta, 0% yellow, and 78% black. This color is perceived as a cool and calming tone. Due to its darkness, it is often associated with sophistication, elegance, and mystery. It's typically used sparingly as an accent color or in backgrounds to create contrast and depth. When working with #0A0B37, it is very important to take accessibility into consideration.

The hex color #0A0B37, also known as Black Rock, presents considerable accessibility challenges, primarily due to its very dark nature. When used as a background color, it necessitates extremely light text to ensure sufficient contrast for readability. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text to meet AA compliance. Given the darkness of #0A0B37, achieving these ratios requires careful selection of foreground colors, such as white or very light shades of yellow or green. Insufficient contrast can severely impact users with visual impairments, making content difficult or impossible to read. Therefore, it's crucial to use contrast checking tools to verify compliance before deploying this color in a design. Additionally, providing alternative high-contrast themes can further improve accessibility for all users. Using this color for decorative elements rather than essential text can mitigate some of these accessibility concerns.

Shades

Digital Color Formats

RGB
10 11 55
RGB10 11 55
Red
Green
Blue
HSL
238.67deg 69.23% 12.75%
238.6769.2312.75HSL
Hue
Saturation
Lightness
HWB
238.67deg 3.92% 78.43%
238.673.9278.43HWB
Hue
Whiteness
Blackness
hex#0A0B37
rgb10 11 55
hsl238.67deg 69.23% 12.75%
cmyk81.82% 80% 0% 78.43%
hwb238.67deg 3.92% 78.43%
xyz-d650.01 0.01 0.04
oklch0.1868 0.0832 273.89
oklab0.1868 0.01 -0.08
CMYK
81.82% 80% 0% 78.43%
81.8280078.43CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0.01 0.04
0.010.010.04XYZ
X
Y
Z
OKLCH
0.1868 0.0832 273.89
0.18680.0832273.89LCH
Lightness
Chroma
Hue
OKLAB
0.1868 0.01 -0.08
0.18680.01-0.08LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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