Firefly is a
cool dark color with the hex code #1B2931.
This muted hue can be represented as RGB
27, 41, 49 in digital design or CMYK 45%, 16%, 0%, 81% for print applications.
Find matching Pantone color.
Firefly
#1B2931
Firefly color values
- HEX
- #1B2931
- RGB
- 27, 41, 49
- HSL
- 202°, 29%, 15%
- CMYK
- 45, 16, 0, 81
Shades & tints
Darker Lighter
About this color
Firefly sits at 202° on the color wheel with 29% saturation and 15% lightness, placing it in the blue segment of the spectrum. Its restrained 29% saturation keeps the hue subtle — present but not assertive, making it easy to layer over or under more expressive colors. Near-black lightness makes it read as a deep, absorptive tone — color is implied more than seen.
In digital environments, Firefly is rendered as rgb(27, 41, 49), where the blue channel is highest at 49, though it sits close to the other channels. Low saturation at this depth produces the kind of sophisticated, near-neutral dark that works for application shells, sidebars, and dark-mode base layers.
For print, Firefly translates to a CMYK breakdown of 45C 16M 0Y 81K. The dominant black channel (81%) 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 Firefly
CSS Variable
:root {
--brand-primary: #1B2931;
--brand-primary-rgb: 27, 41, 49;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#1B2931',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 45%
M: 16%
Y: 0%
K: 81%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(27, 41, 49)
rgba(27, 41, 49, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #1B2931?
#1B2931 is Firefly, a cool dark color with RGB values of 27, 41, 49. It has a hue of 202°, 29%
saturation, and 15% lightness in the HSL color
space.
What is the RGB value of #1B2931?
The RGB color code for #1B2931 is rgb(27, 41, 49). This means it contains 27 red,
41 green, and 49 blue in the RGB color model.
Is Firefly a warm or cool color?
Firefly (#1B2931) is a cool color with a hue between 120-300° on the color wheel.
How do I use #1B2931 in CSS?
You can use #1B2931 in CSS with:
background-color: #1B2931; or color: #1B2931; or as an RGB value: rgb(27, 41, 49). For print design, use CMYK: 45%, 16%, 0%, 81%.