Dark Blue is a
cool dark color with the hex code #300BB7.
This vibrant hue can be represented as RGB
48, 11, 183 in digital design or CMYK 74%, 94%, 0%, 28% for print applications.
Find matching Pantone color.
Dark Blue
#300BB7
Dark Blue color values
- HEX
- #300BB7
- RGB
- 48, 11, 183
- HSL
- 253°, 89%, 38%
- CMYK
- 74, 94, 0, 28
Shades & tints
Darker Lighter
About this color
Dark Blue sits at 253° on the color wheel with 89% saturation and 38% lightness, placing it in the blue segment of the spectrum. With saturation at 89%, this is a high-chroma color: the kind that anchors palettes and demands considered placement. Its mid-range lightness positions it as a mid-tone: neither a background color nor a deep accent, but something in between.
In digital environments, Dark Blue is rendered as rgb(48, 11, 183), where the blue channel is highest at 183, producing a strongly blue character. High saturation combined with low lightness creates deep, jewel-toned results — useful for premium UI elements, hover states, and focused interaction areas.
For print, Dark Blue translates to a CMYK breakdown of 74C 94M 0Y 28K. With a moderate key (28%), this color uses black to deepen the chromatic channels rather than replace them, a profile that typically holds up well in both offset and digital print. 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 Dark Blue
CSS Variable
:root {
--brand-primary: #300BB7;
--brand-primary-rgb: 48, 11, 183;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#300BB7',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 74%
M: 94%
Y: 0%
K: 28%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(48, 11, 183)
rgba(48, 11, 183, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #300BB7?
#300BB7 is Dark Blue, a cool dark color with RGB values of 48, 11, 183. It has a hue of 253°, 89%
saturation, and 38% lightness in the HSL color
space.
What is the RGB value of #300BB7?
The RGB color code for #300BB7 is rgb(48, 11, 183). This means it contains 48 red,
11 green, and 183 blue in the RGB color model.
Is Dark Blue a warm or cool color?
Dark Blue (#300BB7) is a cool color with a hue between 120-300° on the color wheel.
How do I use #300BB7 in CSS?
You can use #300BB7 in CSS with:
background-color: #300BB7; or color: #300BB7; or as an RGB value: rgb(48, 11, 183). For print design, use CMYK: 74%, 94%, 0%, 28%.