The hexadecimal color code #A21D11 represents a dark shade in the red family. In the RGB color model, this color is composed of 162 red, 29 green, and 17 blue, which translates to approximately 64% red, 11% green, and 7% blue. This makes it a highly saturated color with warm undertones that can evoke different emotional responses depending on its application.
When analyzed in the HSL (Hue, Saturation, Lightness) color space, #A21D11 has a hue of 5 degrees, a saturation level of 81%, and a lightness value of 35%. The hue angle of 5° places this color firmly in the red spectrum. In the HSV/HSB color model, this translates to a hue of 5°, saturation of 90%, and brightness/value of 64%.
For print applications using the CMYK color model, #A21D11 would be reproduced using 0% cyan, 82% magenta, 90% yellow, and 36% black. The closest web-safe color is #993300, 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 high saturation makes this color vibrant and attention-grabbing, ideal for call-to-action buttons, highlights, and accent elements. When pairing #A21D11 with other colors, consider its complementary color at hue 185° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 10624273, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #A21D11
Tailwind CSS
red-800
HEX
#A21D11
RGB
rgb(162, 29, 17)
RGB %
64%, 11%, 7%
HSL
hsl(5, 81%, 35%)
HSV
hsv(5, 90%, 64%)
CMYK
0%, 82%, 90%, 36%
Decimal
10624273
Web Safe
#993300
🎨 Color Schemes for #A21D11
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #A21D11
🌗 Shades and Tints of #A21D11
Shades (adding black)
Tints (adding white)
🎚️ Tones of #A21D11
Tones (adding gray / desaturating)
🌈 Hue Variations of #A21D11
Hue Variations (shifting the color spectrum)
👁️ Preview of #A21D11 in Use
Text on #A21D11
This demonstrates text readability on the color background. (Click to edit)
#A21D11 as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #A21D11
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 Vivid Red is a medium, vibrant, warm red color with a hue angle of 5°, saturation of 81%, and lightness of 35%. Its RGB value is (162, 29, 17) and its CMYK breakdown is C:0% M:82% Y:90% K:36%.
This is a Summer (Cool) color palette archetype. Passion, Energy, Action, Danger. Red is a powerful color that evokes strong emotions and captures attention immediately.
Frequently Asked Questions About #A21D11
What is the HEX code for Dark Vivid Red? +
The HEX code for Dark Vivid Red is #A21D11. In CSS you can use it directly as color: #A21D11; or as a background: background-color: #A21D11;. 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 #A21D11? +
The RGB value of #A21D11 is rgb(162, 29, 17). This means the color contains 162 out of 255 parts red, 29 out of 255 parts green, and 17 out of 255 parts blue. Red is the strongest channel in this color mix. You can use the full RGB function in any CSS property: color: rgb(162, 29, 17);
What is the HSL value of #A21D11? +
The HSL value of #A21D11 is hsl(5, 81%, 35%). The hue is 5°, placing it in the red family on the color wheel. The saturation is 81%, making it vibrant. The lightness is 35%, 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 #A21D11 a warm or cool color? +
#A21D11 is classified as a warm color based on its hue angle of 5°. 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 #A21D11? +
The approximate CMYK value of #A21D11 is C:0% M:82% Y:90% K:36%. 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.
