The hexadecimal color code #40BF42 represents a medium shade in the green family. In the RGB color model, this color is composed of 64 red, 191 green, and 66 blue, which translates to approximately 25% red, 75% green, and 26% 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, #40BF42 has a hue of 121 degrees, a saturation level of 50%, and a lightness value of 50%. The hue angle of 121° places this color firmly in the green spectrum. In the HSV/HSB color model, this translates to a hue of 121°, saturation of 66%, and brightness/value of 75%.
For print applications using the CMYK color model, #40BF42 would be reproduced using 66% cyan, 0% magenta, 65% yellow, and 25% black. The closest web-safe color is #33CC33, 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 #40BF42 with other colors, consider its complementary color at hue 301° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 4243266, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #40BF42
Tailwind CSS
green-500
HEX
#40BF42
RGB
rgb(64, 191, 66)
RGB %
25%, 75%, 26%
HSL
hsl(121, 50%, 50%)
HSV
hsv(121, 66%, 75%)
CMYK
66%, 0%, 65%, 25%
Decimal
4243266
Web Safe
#33CC33
🎨 Color Schemes for #40BF42
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #40BF42
🌗 Shades and Tints of #40BF42
Shades (adding black)
Tints (adding white)
🎚️ Tones of #40BF42
Tones (adding gray / desaturating)
🌈 Hue Variations of #40BF42
Hue Variations (shifting the color spectrum)
👁️ Preview of #40BF42 in Use
Text on #40BF42
This demonstrates text readability on the color background. (Click to edit)
#40BF42 as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #40BF42
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.
Cool Emerald is a medium, moderately saturated, cool green color with a hue angle of 121°, saturation of 50%, and lightness of 50%. Its RGB value is (64, 191, 66) and its CMYK breakdown is C:66% M:0% Y:65% K:25%.
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 #40BF42
What is the HEX code for Cool Emerald? +
The HEX code for Cool Emerald is #40BF42. In CSS you can use it directly as color: #40BF42; or as a background: background-color: #40BF42;. 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 #40BF42? +
The RGB value of #40BF42 is rgb(64, 191, 66). This means the color contains 64 out of 255 parts red, 191 out of 255 parts green, and 66 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(64, 191, 66);
What is the HSL value of #40BF42? +
The HSL value of #40BF42 is hsl(121, 50%, 50%). The hue is 121°, placing it in the green family on the color wheel. The saturation is 50%, making it moderately saturated. The lightness is 50%, 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 #40BF42 a warm or cool color? +
#40BF42 is classified as a cool color based on its hue angle of 121°. 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 #40BF42? +
The approximate CMYK value of #40BF42 is C:66% M:0% Y:65% K:25%. 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.
