Fern

Q: How do I use #66AA55 in CSS?

You can use #66AA55 in CSS with: background-color: #66AA55; or color: #66AA55; or as an RGB value: rgb(102, 170, 85). For print design, use CMYK: 40%, 0%, 50%, 33%.

#66AA55

Fern is a neutral medium color with the hex code #66AA55. This moderately saturated hue can be represented as RGB 102, 170, 85 in digital design or CMYK 40%, 0%, 50%, 33% for print applications. Find matching Pantone color.

Fern color values

HEX: #66AA55
RGB: 102, 170, 85
HSL: 108°, 33%, 50%
CMYK: 40, 0, 50, 33

Shades & tints

Darker Lighter

About this color

Fern sits at 108° on the color wheel with 33% saturation and 50% lightness, placing it in the green segment of the spectrum. The moderate 33% 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, Fern is rendered as rgb(102, 170, 85), where the green channel leads at 170, producing a distinctly green-dominant tone. This cool mid-tone is a reliable choice for UI chrome, informational states, and contexts that call for a calm, readable presence.

For print, Fern translates to a CMYK breakdown of 40C 0M 50Y 33K. With a moderate key (33%), 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 Fern

CSS Variable

:root {
  --brand-primary: #66AA55;
  --brand-primary-rgb: 102, 170, 85;
}

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

Tailwind Config

colors: {
  brand: '#66AA55',
}

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

Print Design (CMYK)

C: 40%
M: 0%
Y: 50%
K: 33%

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

RGB for Screens

rgb(102, 170, 85)
rgba(102, 170, 85, 0.8)

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

Brands using similar hue

5 brand s with colors near 108° on the color wheel

Frequently asked questions

What color is #66AA55?

#66AA55 is Fern, a neutral medium color with RGB values of 102, 170, 85. It has a hue of 108°, 33% saturation, and 50% lightness in the HSL color space.

What is the RGB value of #66AA55?

The RGB color code for #66AA55 is rgb(102, 170, 85). This means it contains 102 red, 170 green, and 85 blue in the RGB color model.

Is Fern a warm or cool color?

Fern (#66AA55) is a neutral color, sitting between warm and cool on the color wheel.

How do I use #66AA55 in CSS?

You can use #66AA55 in CSS with: background-color: #66AA55; or color: #66AA55; or as an RGB value: rgb(102, 170, 85). For print design, use CMYK: 40%, 0%, 50%, 33%.