Black Rock

#150038

General Information about Black Rock

The hexadecimal color code #150038, also known as Black Rock, is a dark, saturated purple hue. It's composed of 8.24% red, 0% green, and 21.96% blue. In the RGB color space, it's represented as (21, 0, 56). This color is often associated with mystery, sophistication, and depth. In color psychology, dark purples can evoke feelings of creativity, royalty, and ambition. It can be used to add a touch of elegance and drama to designs. However, its low luminosity makes it challenging to use in large quantities or as a primary color, especially when considering accessibility guidelines for web design.

The hex color #150038, also known as Black Rock, presents significant accessibility challenges, especially in text-based applications. Its extremely dark hue results in very low contrast against typical light backgrounds, making it difficult for users with visual impairments to read or distinguish text. To ensure accessibility, it is crucial to use this color sparingly, and only with very light or high-contrast complementary colors. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text as per WCAG guidelines. Avoid using it for crucial UI elements like buttons or links without careful consideration of the foreground color. Thorough testing with accessibility tools is advisable to validate compliance with accessibility standards and ensure a positive user experience for everyone.

Shades

Digital Color Formats

RGB
21 0 56
RGB21 0 56
Red
Green
Blue
HSL
262.5deg 100% 10.98%
262.510010.98HSL
Hue
Saturation
Lightness
HWB
262.5deg 0% 78.04%
262.5078.04HWB
Hue
Whiteness
Blackness
hex#150038
rgb21 0 56
hsl262.5deg 100% 10.98%
cmyk62.5% 100% 0% 78.04%
hwb262.5deg 0% 78.04%
xyz-d650.01 0 0.04
oklch0.178 0.0998 291.49
oklab0.178 0.04 -0.09
CMYK
62.5% 100% 0% 78.04%
62.5100078.04CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0 0.04
0.0100.04XYZ
X
Y
Z
OKLCH
0.178 0.0998 291.49
0.1780.0998291.49LCH
Lightness
Chroma
Hue
OKLAB
0.178 0.04 -0.09
0.1780.04-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons