Steel Blue is a
cool light color with the hex code #6399CF.
This moderately saturated hue can be represented as RGB
99, 153, 207 in digital design or CMYK 52%, 26%, 0%, 19% for print applications.
Find matching Pantone color.
Steel Blue
#6399CF
Steel Blue Color Values
- HEX
- #6399CF
- RGB
- 99, 153, 207
- HSL
- 210°, 53%, 60%
- CMYK
- 52, 26, 0, 19
Shades & Tints
Darker Lighter
About this color
Steel Blue sits at 210° on the color wheel, placing it in the cool color family, typically conveying calm and professionalism. With 53% saturation and 60% lightness, this moderately saturated light hue balances visibility with restraint.
In digital design, cool colors like Steel Blue work well for backgrounds, navigation, and establishing trust. Light colors are ideal for backgrounds and creating breathing room in layouts.
When using Steel Blue in print, the CMYK breakdown of 52%, 26%, 0%, 19% ensures accurate color reproduction. The bright CMYK values indicate this color relies on pure inks rather than black, maintaining vibrancy in print.
Color Harmonies
Complementary
Analogous
Triadic
Split-Complementary
How to use Steel Blue
CSS Variable
:root {
--brand-primary: #6399CF;
--brand-primary-rgb: 99, 153, 207;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#6399CF',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 52%
M: 26%
Y: 0%
K: 19%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(99, 153, 207)
rgba(99, 153, 207, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Brands Using the Same Hue
17 brand s with colors near 210° on the color wheel
Frequently Asked Questions
What color is #6399CF?
#6399CF is Steel Blue, a cool light color with RGB values of 99, 153, 207. It has a hue of 210°, 53%
saturation, and 60% lightness in the HSL color
space.
What is the RGB value of #6399CF?
The RGB color code for #6399CF is rgb(99, 153, 207). This means it contains 99 red,
153 green, and 207 blue in the RGB color model.
Is Steel Blue a warm or cool color?
Steel Blue (#6399CF) is a cool color with a hue between 120-300° on the color wheel.
How do I use #6399CF in CSS?
You can use #6399CF in CSS with:
background-color: #6399CF; or color: #6399CF; or as an RGB value: rgb(99, 153, 207). For print design, use CMYK: 52%, 26%, 0%, 19%.