Boston Blue is a
cool medium color with the hex code #4F91B0.
This moderately saturated hue can be represented as RGB
79, 145, 176 in digital design or CMYK 55%, 18%, 0%, 31% for print applications.
Find matching Pantone color.
Boston Blue
#4F91B0
Boston Blue color values
- HEX
- #4F91B0
- RGB
- 79, 145, 176
- HSL
- 199°, 38%, 50%
- CMYK
- 55, 18, 0, 31
Shades & tints
Darker Lighter
About this color
Boston Blue sits at 199° on the color wheel with 38% saturation and 50% lightness, placing it in the blue segment of the spectrum. The moderate 38% saturation gives it enough color presence to register clearly without competing for dominance in a composition. 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, Boston Blue is rendered as rgb(79, 145, 176), where the blue channel is highest at 176, anchoring the color in the cool register. This cool mid-tone is a reliable choice for UI chrome, informational states, and contexts that call for a calm, readable presence.
For print, Boston Blue translates to a CMYK breakdown of 55C 18M 0Y 31K. With a moderate key (31%), 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 Boston Blue
CSS Variable
:root {
--brand-primary: #4F91B0;
--brand-primary-rgb: 79, 145, 176;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#4F91B0',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 55%
M: 18%
Y: 0%
K: 31%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(79, 145, 176)
rgba(79, 145, 176, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #4F91B0?
#4F91B0 is Boston Blue, a cool medium color with RGB values of 79, 145, 176. It has a hue of 199°, 38%
saturation, and 50% lightness in the HSL color
space.
What is the RGB value of #4F91B0?
The RGB color code for #4F91B0 is rgb(79, 145, 176). This means it contains 79 red,
145 green, and 176 blue in the RGB color model.
Is Boston Blue a warm or cool color?
Boston Blue (#4F91B0) is a cool color with a hue between 120-300° on the color wheel.
How do I use #4F91B0 in CSS?
You can use #4F91B0 in CSS with:
background-color: #4F91B0; or color: #4F91B0; or as an RGB value: rgb(79, 145, 176). For print design, use CMYK: 55%, 18%, 0%, 31%.