The hexadecimal color code #646D31 represents a dark shade in the yellow family. In the RGB color model, this color is composed of 100 red, 109 green, and 49 blue, which translates to approximately 39% red, 43% green, and 19% 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, #646D31 has a hue of 69 degrees, a saturation level of 38%, and a lightness value of 31%. The hue angle of 69° places this color firmly in the yellow spectrum. In the HSV/HSB color model, this translates to a hue of 69°, saturation of 55%, and brightness/value of 43%.
For print applications using the CMYK color model, #646D31 would be reproduced using 8% cyan, 0% magenta, 55% yellow, and 57% black. The closest web-safe color is #666633, 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 #646D31 with other colors, consider its complementary color at hue 249° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 6581553, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #646D31
Tailwind CSS
stone-600
HEX
#646D31
RGB
rgb(100, 109, 49)
RGB %
39%, 43%, 19%
HSL
hsl(69, 38%, 31%)
HSV
hsv(69, 55%, 43%)
CMYK
8%, 0%, 55%, 57%
Decimal
6581553
Web Safe
#666633
🎨 Color Schemes for #646D31
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #646D31
🌗 Shades and Tints of #646D31
Shades (adding black)
Tints (adding white)
🎚️ Tones of #646D31
Tones (adding gray / desaturating)
🌈 Hue Variations of #646D31
Hue Variations (shifting the color spectrum)
👁️ Preview of #646D31 in Use
Text on #646D31
This demonstrates text readability on the color background. (Click to edit)
#646D31 as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #646D31
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.
Dark Yellow is a medium, moderately saturated, warm yellow color with a hue angle of 69°, saturation of 38%, and lightness of 31%. Its RGB value is (100, 109, 49) and its CMYK breakdown is C:8% M:0% Y:55% K:57%.
This is a Spring (Vital) color palette archetype. Happiness, Positivity, Optimism, Caution. Yellow is the most luminous of all the colors of the spectrum.
Frequently Asked Questions About #646D31
What is the HEX code for Dark Yellow? +
The HEX code for Dark Yellow is #646D31. In CSS you can use it directly as color: #646D31; or as a background: background-color: #646D31;. 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 #646D31? +
The RGB value of #646D31 is rgb(100, 109, 49). This means the color contains 100 out of 255 parts red, 109 out of 255 parts green, and 49 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(100, 109, 49);
What is the HSL value of #646D31? +
The HSL value of #646D31 is hsl(69, 38%, 31%). The hue is 69°, placing it in the yellow family on the color wheel. The saturation is 38%, making it moderately saturated. The lightness is 31%, 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 #646D31 a warm or cool color? +
#646D31 is classified as a warm color based on its hue angle of 69°. Warm colors — reds, oranges, and yellows — evoke energy, enthusiasm, and urgency. They tend to advance visually and draw the eye. In design, warm colors are often used for calls-to-action, food and hospitality brands, and anywhere a feeling of warmth or excitement is desired.
What is the CMYK value of #646D31? +
The approximate CMYK value of #646D31 is C:8% M:0% Y:55% K:57%. 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.
