Black Rock

#0A013B

General Information

The hex color code #0A013B, often referred to as 'Black Rock', is a very dark shade of blue-purple. It resides in the lower range of the color spectrum due to its low hexadecimal values. In the RGB (Red, Green, Blue) color model, it is composed of 3.92% red, 0.39% green, and 23.14% blue. This composition explains its deep, muted tone. In the CMYK (Cyan, Magenta, Yellow, Black) color model, it consists of 83% cyan, 98% magenta, 0% yellow, and 77% black. Colors similar to #0A013B are often associated with sophistication, mystery, and depth. Due to its darkness, it is typically used as an accent or background color, rather than a primary color, to avoid overwhelming the senses.

The hex color #0A013B, also known as Black Rock, presents significant accessibility challenges, especially in text-based applications. Its extremely low lightness value (very close to black) results in poor contrast against most backgrounds. Using this color for text or interactive elements requires careful consideration. To ensure readability and usability, it's crucial to pair it with a very light color, such as white or a pale yellow, to achieve a contrast ratio that meets WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Failure to meet these contrast requirements can exclude users with visual impairments, making content difficult or impossible to perceive. Careful testing with accessibility tools is essential to validate the color combination. Beyond text, its use in graphical elements should be similarly scrutinized for sufficient discernibility.

Shades

Digital Color Formats

RGB
10 1 59
RGB10 1 59
Red
Green
Blue
HSL
249.31deg 96.67% 11.76%
249.3196.6711.76HSL
Hue
Saturation
Lightness
HWB
249.31deg 0.39% 76.86%
249.310.3976.86HWB
Hue
Whiteness
Blackness
hex#0A013B
rgb10 1 59
hsl249.31deg 96.67% 11.76%
cmyk83.05% 98.31% 0% 76.86%
hwb249.31deg 0.39% 76.86%
xyz-d650.01 0 0.04
oklch0.1717 0.1034 276.52
oklab0.1717 0.01 -0.1
CMYK
83.05% 98.31% 0% 76.86%
83.0598.31076.86CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0 0.04
0.0100.04XYZ
X
Y
Z
OKLCH
0.1717 0.1034 276.52
0.17170.1034276.52LCH
Lightness
Chroma
Hue
OKLAB
0.1717 0.01 -0.1
0.17170.01-0.1LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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