Dark Blue is a
cool light color with the hex code #3741FB.
This vibrant hue can be represented as RGB
55, 65, 251 in digital design or CMYK 78%, 74%, 0%, 2% for print applications.
Find matching Pantone color.
Dark Blue
#3741FB
Dark Blue color values
- HEX
- #3741FB
- RGB
- 55, 65, 251
- HSL
- 237°, 96%, 60%
- CMYK
- 78, 74, 0, 2
Shades & tints
Darker Lighter
About this color
Dark Blue sits at 237° on the color wheel with 96% saturation and 60% lightness, placing it in the blue segment of the spectrum. With saturation at 96%, this is a high-chroma color: the kind that anchors palettes and demands considered placement. At medium-high lightness, it holds its own on white backgrounds while remaining approachable.
In digital environments, Dark Blue is rendered as rgb(55, 65, 251), where the blue channel is highest at 251, producing a strongly blue character. High saturation at this lightness produces strong contrast against white — effective for CTAs, badges, and elements that need to stop the eye.
For print, Dark Blue translates to a CMYK breakdown of 78C 74M 0Y 2K. With almost no black ink (2%), this color is built almost entirely from process inks: 78% cyan, 74% magenta. This profile tends toward vibrancy in print, though ink density limits on press may affect saturation on coated versus uncoated stock. 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: #3741FB;
--brand-primary-rgb: 55, 65, 251;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#3741FB',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 78%
M: 74%
Y: 0%
K: 2%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(55, 65, 251)
rgba(55, 65, 251, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Brands using similar hue
24 brand s with colors near 237° on the color wheel
Frequently asked questions
What color is #3741FB?
#3741FB is Dark Blue, a cool light color with RGB values of 55, 65, 251. It has a hue of 237°, 96%
saturation, and 60% lightness in the HSL color
space.
What is the RGB value of #3741FB?
The RGB color code for #3741FB is rgb(55, 65, 251). This means it contains 55 red,
65 green, and 251 blue in the RGB color model.
Is Dark Blue a warm or cool color?
Dark Blue (#3741FB) is a cool color with a hue between 120-300° on the color wheel.
How do I use #3741FB in CSS?
You can use #3741FB in CSS with:
background-color: #3741FB; or color: #3741FB; or as an RGB value: rgb(55, 65, 251). For print design, use CMYK: 78%, 74%, 0%, 2%.