Swamp Green

Q: How do I use #99B380 in CSS?

You can use #99B380 in CSS with: background-color: #99B380; or color: #99B380; or as an RGB value: rgb(153, 179, 128). For print design, use CMYK: 15%, 0%, 28%, 30%.

#99B380

Swamp Green is a neutral light color with the hex code #99B380. This muted hue can be represented as RGB 153, 179, 128 in digital design or CMYK 15%, 0%, 28%, 30% for print applications. Find matching Pantone color.

Swamp Green color values

HEX: #99B380
RGB: 153, 179, 128
HSL: 91°, 25%, 60%
CMYK: 15, 0, 28, 30

Shades & tints

Darker Lighter

About this color

Swamp Green sits at 91° on the color wheel with 25% saturation and 60% lightness, placing it in the green segment of the spectrum. Its restrained 25% saturation keeps the hue subtle — present but not assertive, making it easy to layer over or under more expressive colors. At medium-high lightness, it holds its own on white backgrounds while remaining approachable.

In digital environments, Swamp Green is rendered as rgb(153, 179, 128), where the green channel leads at 179, pulling the color toward the green-yellow axis. Muted saturation at high lightness is a classic formula for soft background fills, placeholder states, and secondary surface colors in light-mode interfaces.

For print, Swamp Green translates to a CMYK breakdown of 15C 0M 28Y 30K. With a moderate key (30%), 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 Swamp Green

CSS Variable

:root {
  --brand-primary: #99B380;
  --brand-primary-rgb: 153, 179, 128;
}

Define as a CSS custom property for consistent theming across your site.

Tailwind Config

colors: {
  brand: '#99B380',
}

Add to your Tailwind config to use classes like bg-brand.

Print Design (CMYK)

C: 15%
M: 0%
Y: 28%
K: 30%

Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.

RGB for Screens

rgb(153, 179, 128)
rgba(153, 179, 128, 0.8)

Use RGB notation for compatibility or add alpha channel for transparency.

Brands using similar hue

8 brand s with colors near 91° on the color wheel

Frequently asked questions

What color is #99B380?

#99B380 is Swamp Green, a neutral light color with RGB values of 153, 179, 128. It has a hue of 91°, 25% saturation, and 60% lightness in the HSL color space.

What is the RGB value of #99B380?

The RGB color code for #99B380 is rgb(153, 179, 128). This means it contains 153 red, 179 green, and 128 blue in the RGB color model.

Is Swamp Green a warm or cool color?

Swamp Green (#99B380) is a neutral color, sitting between warm and cool on the color wheel.

How do I use #99B380 in CSS?

You can use #99B380 in CSS with: background-color: #99B380; or color: #99B380; or as an RGB value: rgb(153, 179, 128). For print design, use CMYK: 15%, 0%, 28%, 30%.