The hexadecimal color code #166A21 represents a dark shade in the green family. In the RGB color model, this color is composed of 22 red, 106 green, and 33 blue, which translates to approximately 9% red, 42% green, and 13% blue. This makes it a moderately saturated color with cool undertones that can evoke different emotional responses depending on its application.
When analyzed in the HSL (Hue, Saturation, Lightness) color space, #166A21 has a hue of 128 degrees, a saturation level of 66%, and a lightness value of 25%. The hue angle of 128° places this color firmly in the green spectrum. In the HSV/HSB color model, this translates to a hue of 128°, saturation of 79%, and brightness/value of 42%.
For print applications using the CMYK color model, #166A21 would be reproduced using 79% cyan, 0% magenta, 69% yellow, and 58% black. The closest web-safe color is #006633, which may be useful for ensuring compatibility across older displays and systems.
This color works well in various design contexts. As a darker shade, it works well for text, headers, and creating visual weight in compositions. The high saturation makes this color vibrant and attention-grabbing, ideal for call-to-action buttons, highlights, and accent elements. When pairing #166A21 with other colors, consider its complementary color at hue 308° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 1468961, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #166A21
Tailwind CSS
green-800
HEX
#166A21
RGB
rgb(22, 106, 33)
RGB %
9%, 42%, 13%
HSL
hsl(128, 66%, 25%)
HSV
hsv(128, 79%, 42%)
CMYK
79%, 0%, 69%, 58%
Decimal
1468961
Web Safe
#006633
🎨 Color Schemes for #166A21
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #166A21
🌗 Shades and Tints of #166A21
Shades (adding black)
Tints (adding white)
🎚️ Tones of #166A21
Tones (adding gray / desaturating)
🌈 Hue Variations of #166A21
Hue Variations (shifting the color spectrum)
👁️ Preview of #166A21 in Use
Text on #166A21
This demonstrates text readability on the color background. (Click to edit)
#166A21 as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #166A21
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.
Deep Cool Emerald is a dark, vibrant, cool green color with a hue angle of 128°, saturation of 66%, and lightness of 25%. Its RGB value is (22, 106, 33) and its CMYK breakdown is C:79% M:0% Y:69% K:58%.
This is a Winter (Deep) color palette archetype. Nature, Growth, Harmony, Health. Green suggests stability and endurance, bridging the warm and cool colors.
Frequently Asked Questions About #166A21
What is the HEX code for Deep Cool Emerald? +
The HEX code for Deep Cool Emerald is #166A21. In CSS you can use it directly as color: #166A21; or as a background: background-color: #166A21;. 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 #166A21? +
The RGB value of #166A21 is rgb(22, 106, 33). This means the color contains 22 out of 255 parts red, 106 out of 255 parts green, and 33 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(22, 106, 33);
What is the HSL value of #166A21? +
The HSL value of #166A21 is hsl(128, 66%, 25%). The hue is 128°, placing it in the green family on the color wheel. The saturation is 66%, making it vibrant. The lightness is 25%, making it dark. HSL is the most useful format for programmatic color manipulation in CSS, as you can easily adjust lightness to create tints and shades.
Is #166A21 a warm or cool color? +
#166A21 is classified as a cool color based on its hue angle of 128°. 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 #166A21? +
The approximate CMYK value of #166A21 is C:79% M:0% Y:69% K:58%. 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.
