River Bed is a
cool dark color with the hex code #3F4B5A.
This muted hue can be represented as RGB
63, 75, 90 in digital design or CMYK 30%, 17%, 0%, 65% for print applications.
Find matching Pantone color.
River Bed
#3F4B5A
River Bed color values
- HEX
- #3F4B5A
- RGB
- 63, 75, 90
- HSL
- 213°, 18%, 30%
- CMYK
- 30, 17, 0, 65
Shades & tints
Darker Lighter
About this color
River Bed sits at 213° on the color wheel with 18% saturation and 30% lightness, placing it in the blue segment of the spectrum. Its restrained 18% saturation keeps the hue subtle — present but not assertive, making it easy to layer over or under more expressive colors. The lower lightness gives it weight and depth, lending gravity to any palette it enters.
In digital environments, River Bed is rendered as rgb(63, 75, 90), where the blue channel is highest at 90, 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, River Bed translates to a CMYK breakdown of 30C 17M 0Y 65K. A substantial black component (65%) anchors this color in print. The remaining ink channels supplement rather than drive the hue, which keeps the result stable across different paper stocks. 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 River Bed
CSS Variable
:root {
--brand-primary: #3F4B5A;
--brand-primary-rgb: 63, 75, 90;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#3F4B5A',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 30%
M: 17%
Y: 0%
K: 65%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(63, 75, 90)
rgba(63, 75, 90, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Brands using similar hue
24 brand s with colors near 213° on the color wheel
Frequently asked questions
What color is #3F4B5A?
#3F4B5A is River Bed, a cool dark color with RGB values of 63, 75, 90. It has a hue of 213°, 18%
saturation, and 30% lightness in the HSL color
space.
What is the RGB value of #3F4B5A?
The RGB color code for #3F4B5A is rgb(63, 75, 90). This means it contains 63 red,
75 green, and 90 blue in the RGB color model.
Is River Bed a warm or cool color?
River Bed (#3F4B5A) is a cool color with a hue between 120-300° on the color wheel.
How do I use #3F4B5A in CSS?
You can use #3F4B5A in CSS with:
background-color: #3F4B5A; or color: #3F4B5A; or as an RGB value: rgb(63, 75, 90). For print design, use CMYK: 30%, 17%, 0%, 65%.