Black Rock

#0A0128

General Information

The hexadecimal color code #0A0128, also known as Black Rock, is a very dark, almost black, shade of blue-purple. It's composed of 3.92% red, 0.39% green, and 15.69% blue. In the RGB color model, it is represented as RGB(10, 1, 40). This color falls within the dark end of the color spectrum, resulting in a low luminance value of 1.04 cd/m². Colors with such low luminance are typically used to create a sense of depth, mystery, or sophistication, but require careful consideration in design to ensure readability and accessibility. The color might also be used in certain designs to evoke a feeling of elegance and seriousness.

The hex color #0A0128, also known as Black Rock, presents significant accessibility challenges due to its extremely low luminance. Its dark nature results in very poor contrast against virtually all standard background colors, especially white. This severely impacts readability for users with visual impairments, including those with low vision or color blindness. Web Content Accessibility Guidelines (WCAG) emphasize the importance of sufficient color contrast to ensure content is perceivable. To meet WCAG standards, using #0A0128 for text or interactive elements requires a very light foreground color to achieve an acceptable contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Thorough testing with accessibility evaluation tools is crucial to confirm compliance and ensure an inclusive user experience. In most cases, this color should be avoided for text or critical UI elements unless paired with a very light contrasting color.

Shades

Digital Color Formats

RGB
10 1 40
RGB10 1 40
Red
Green
Blue
HSL
253.85deg 95.12% 8.04%
253.8595.128.04HSL
Hue
Saturation
Lightness
HWB
253.85deg 0.39% 84.31%
253.850.3984.31HWB
Hue
Whiteness
Blackness
hex#0A0128
rgb10 1 40
hsl253.85deg 95.12% 8.04%
cmyk75% 97.5% 0% 84.31%
hwb253.85deg 0.39% 84.31%
xyz-d650.01 0 0.02
oklch0.1437 0.0786 285.76
oklab0.1437 0.02 -0.08
CMYK
75% 97.5% 0% 84.31%
7597.5084.31CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0 0.02
0.0100.02XYZ
X
Y
Z
OKLCH
0.1437 0.0786 285.76
0.14370.0786285.76LCH
Lightness
Chroma
Hue
OKLAB
0.1437 0.02 -0.08
0.14370.02-0.08LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons