Pastel Green is a
cool light color with the hex code #51E181.
This vibrant hue can be represented as RGB
81, 225, 129 in digital design or CMYK 64%, 0%, 43%, 12% for print applications.
Find matching Pantone color.
Pastel Green
#51E181
Pastel Green color values
- HEX
- #51E181
- RGB
- 81, 225, 129
- HSL
- 140°, 71%, 60%
- CMYK
- 64, 0, 43, 12
Shades & tints
Darker Lighter
About this color
Pastel Green sits at 140° on the color wheel with 71% saturation and 60% lightness, placing it in the green segment of the spectrum. At 71% saturation, the hue is fully legible and confident — richly chromatic without tipping into high-contrast territory. At medium-high lightness, it holds its own on white backgrounds while remaining approachable.
In digital environments, Pastel Green is rendered as rgb(81, 225, 129), where the green channel leads at 225, producing a distinctly green-dominant tone. High saturation at this lightness produces strong contrast against white — effective for CTAs, badges, and elements that need to stop the eye.
For print, Pastel Green translates to a CMYK breakdown of 64C 0M 43Y 12K. The low-to-moderate black value (12%) means the color's character in print comes primarily from its cyan ink content (64%), with black serving as a supporting shadow tone. 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 Pastel Green
CSS Variable
:root {
--brand-primary: #51E181;
--brand-primary-rgb: 81, 225, 129;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#51E181',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 64%
M: 0%
Y: 43%
K: 12%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(81, 225, 129)
rgba(81, 225, 129, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #51E181?
#51E181 is Pastel Green, a cool light color with RGB values of 81, 225, 129. It has a hue of 140°, 71%
saturation, and 60% lightness in the HSL color
space.
What is the RGB value of #51E181?
The RGB color code for #51E181 is rgb(81, 225, 129). This means it contains 81 red,
225 green, and 129 blue in the RGB color model.
Is Pastel Green a warm or cool color?
Pastel Green (#51E181) is a cool color with a hue between 120-300° on the color wheel.
How do I use #51E181 in CSS?
You can use #51E181 in CSS with:
background-color: #51E181; or color: #51E181; or as an RGB value: rgb(81, 225, 129). For print design, use CMYK: 64%, 0%, 43%, 12%.