Black Rock is a
cool dark color with the hex code #15042F.
This vibrant hue can be represented as RGB
21, 4, 47 in digital design or CMYK 55%, 91%, 0%, 82% for print applications.
Find matching Pantone color.
Black Rock
#15042F
Black Rock color values
- HEX
- #15042F
- RGB
- 21, 4, 47
- HSL
- 264°, 84%, 10%
- CMYK
- 55, 91, 0, 82
Shades & tints
Darker Lighter
About this color
Black Rock sits at 264° on the color wheel with 84% saturation and 10% lightness, placing it in the blue-violet segment of the spectrum. With saturation at 84%, this is a high-chroma color: the kind that anchors palettes and demands considered placement. Near-black lightness makes it read as a deep, absorptive tone — color is implied more than seen.
In digital environments, Black Rock is rendered as rgb(21, 4, 47), where the blue channel is highest at 47, anchoring the color in the cool register. High saturation combined with low lightness creates deep, jewel-toned results — useful for premium UI elements, hover states, and focused interaction areas.
For print, Black Rock translates to a CMYK breakdown of 55C 91M 0Y 82K. The dominant black channel (82%) does most of the tonal work here — cyan, magenta, and yellow contribute minimally, so the printed result will be a deep, near-neutral tone that reads differently from its screen equivalent. No brands in the brandkit.pro library currently specify this exact hex as a named brand color.
Color harmonies
Complementary
Analogous
Triadic
Split-Complementary
How to use Black Rock
CSS Variable
:root {
--brand-primary: #15042F;
--brand-primary-rgb: 21, 4, 47;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#15042F',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 55%
M: 91%
Y: 0%
K: 82%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(21, 4, 47)
rgba(21, 4, 47, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #15042F?
#15042F is Black Rock, a cool dark color with RGB values of 21, 4, 47. It has a hue of 264°, 84%
saturation, and 10% lightness in the HSL color
space.
What is the RGB value of #15042F?
The RGB color code for #15042F is rgb(21, 4, 47). This means it contains 21 red,
4 green, and 47 blue in the RGB color model.
Is Black Rock a warm or cool color?
Black Rock (#15042F) is a cool color with a hue between 120-300° on the color wheel.
How do I use #15042F in CSS?
You can use #15042F in CSS with:
background-color: #15042F; or color: #15042F; or as an RGB value: rgb(21, 4, 47). For print design, use CMYK: 55%, 91%, 0%, 82%.