The hexadecimal color code #51BD5A represents a medium shade in the green family. In the RGB color model, this color is composed of 81 red, 189 green, and 90 blue, which translates to approximately 32% red, 74% green, and 35% blue. This makes it a slightly desaturated color with cool undertones that can evoke different emotional responses depending on its application.
When analyzed in the HSL (Hue, Saturation, Lightness) color space, #51BD5A has a hue of 125 degrees, a saturation level of 45%, and a lightness value of 53%. The hue angle of 125° places this color firmly in the green spectrum. In the HSV/HSB color model, this translates to a hue of 125°, saturation of 57%, and brightness/value of 74%.
For print applications using the CMYK color model, #51BD5A would be reproduced using 57% cyan, 0% magenta, 52% yellow, and 26% black. The closest web-safe color is #66CC66, which may be useful for ensuring compatibility across older displays and systems.
This color works well in various design contexts. With its medium lightness, it's versatile enough for both foreground elements and subtle backgrounds. The moderate to low saturation gives this color a sophisticated, muted quality that works well in professional and minimalist designs. When pairing #51BD5A with other colors, consider its complementary color at hue 305° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 5356890, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #51BD5A
Tailwind CSS
green-500
HEX
#51BD5A
RGB
rgb(81, 189, 90)
RGB %
32%, 74%, 35%
HSL
hsl(125, 45%, 53%)
HSV
hsv(125, 57%, 74%)
CMYK
57%, 0%, 52%, 26%
Decimal
5356890
Web Safe
#66CC66
🎨 Color Schemes for #51BD5A
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #51BD5A
🌗 Shades and Tints of #51BD5A
Shades (adding black)
Tints (adding white)
🎚️ Tones of #51BD5A
Tones (adding gray / desaturating)
🌈 Hue Variations of #51BD5A
Hue Variations (shifting the color spectrum)
👁️ Preview of #51BD5A in Use
Text on #51BD5A
This demonstrates text readability on the color background. (Click to edit)
#51BD5A as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #51BD5A
Check how a color is perceived by people with different types of color blindness to create more accessible designs. Understanding color perception helps ensure your content is accessible to everyone.
Emerald is a medium, moderately saturated, cool green color with a hue angle of 125°, saturation of 45%, and lightness of 53%. Its RGB value is (81, 189, 90) and its CMYK breakdown is C:57% M:0% Y:52% K:26%.
This is a Spring (Vital) color palette archetype. Nature, Growth, Harmony, Health. Green suggests stability and endurance, bridging the warm and cool colors.
Frequently Asked Questions About #51BD5A
What is the HEX code for Emerald? +
The HEX code for Emerald is #51BD5A. In CSS you can use it directly as color: #51BD5A; or as a background: background-color: #51BD5A;. The three-character shorthand is not available for this color since it cannot be reduced without changing the value. Use the full six-character hex for accurate reproduction in any web or design project.
What is the RGB value of #51BD5A? +
The RGB value of #51BD5A is rgb(81, 189, 90). This means the color contains 81 out of 255 parts red, 189 out of 255 parts green, and 90 out of 255 parts blue. Red is the weakest (with blue dominant) channel in this color mix. You can use the full RGB function in any CSS property: color: rgb(81, 189, 90);
What is the HSL value of #51BD5A? +
The HSL value of #51BD5A is hsl(125, 45%, 53%). The hue is 125°, placing it in the green family on the color wheel. The saturation is 45%, making it moderately saturated. The lightness is 53%, making it medium. HSL is the most useful format for programmatic color manipulation in CSS, as you can easily adjust lightness to create tints and shades.
Is #51BD5A a warm or cool color? +
#51BD5A is classified as a cool color based on its hue angle of 125°. Cool colors — blues, greens, and purples — evoke calm, trust, and professionalism. They tend to recede visually and create a feeling of space. In design, cool colors are often used for technology, healthcare, and finance brands, as well as anywhere a sense of calm or reliability is needed.
What is the CMYK value of #51BD5A? +
The approximate CMYK value of #51BD5A is C:57% M:0% Y:52% K:26%. CMYK (Cyan, Magenta, Yellow, Key/Black) is the color model used in physical printing. Unlike RGB which mixes light additively on screens, CMYK mixes inks subtractively on paper. Note that the RGB-to-CMYK conversion is an approximation — screen colors and print colors exist in different color gamuts, and some screen colors cannot be exactly reproduced in print. For precise print work, consult a professional print color profile or Pantone matching system.
