The hexadecimal color code #181D2A represents a very dark shade in the blue family. In the RGB color model, this color is composed of 24 red, 29 green, and 42 blue, which translates to approximately 9% red, 11% green, and 16% 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, #181D2A has a hue of 223 degrees, a saturation level of 27%, and a lightness value of 13%. The hue angle of 223° places this color firmly in the blue spectrum. In the HSV/HSB color model, this translates to a hue of 223°, saturation of 43%, and brightness/value of 16%.
For print applications using the CMYK color model, #181D2A would be reproduced using 43% cyan, 31% magenta, 0% yellow, and 84% black. The closest web-safe color is #003333, 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 moderate to low saturation gives this color a sophisticated, muted quality that works well in professional and minimalist designs. When pairing #181D2A with other colors, consider its complementary color at hue 43° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 1580330, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #181D2A
Tailwind CSS
gray-900
HEX
#181D2A
RGB
rgb(24, 29, 42)
RGB %
9%, 11%, 16%
HSL
hsl(223, 27%, 13%)
HSV
hsv(223, 43%, 16%)
CMYK
43%, 31%, 0%, 84%
Decimal
1580330
Web Safe
#003333
🎨 Color Schemes for #181D2A
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #181D2A
🌗 Shades and Tints of #181D2A
Shades (adding black)
Tints (adding white)
🎚️ Tones of #181D2A
Tones (adding gray / desaturating)
🌈 Hue Variations of #181D2A
Hue Variations (shifting the color spectrum)
👁️ Preview of #181D2A in Use
Text on #181D2A
This demonstrates text readability on the color background. (Click to edit)
#181D2A as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #181D2A
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 Blue is a dark, moderately saturated, cool blue color with a hue angle of 223°, saturation of 27%, and lightness of 13%. Its RGB value is (24, 29, 42) and its CMYK breakdown is C:43% M:31% Y:0% K:84%.
This is a Winter (Deep) color palette archetype. Trust, Loyalty, Wisdom, Confidence. Blue is considered beneficial to the mind and body.
Frequently Asked Questions About #181D2A
What is the HEX code for Deep Blue? +
The HEX code for Deep Blue is #181D2A. In CSS you can use it directly as color: #181D2A; or as a background: background-color: #181D2A;. 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 #181D2A? +
The RGB value of #181D2A is rgb(24, 29, 42). This means the color contains 24 out of 255 parts red, 29 out of 255 parts green, and 42 out of 255 parts blue. Red is the moderate channel in this color mix. You can use the full RGB function in any CSS property: color: rgb(24, 29, 42);
What is the HSL value of #181D2A? +
The HSL value of #181D2A is hsl(223, 27%, 13%). The hue is 223°, placing it in the blue family on the color wheel. The saturation is 27%, making it moderately saturated. The lightness is 13%, 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 #181D2A a warm or cool color? +
#181D2A is classified as a cool color based on its hue angle of 223°. 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 #181D2A? +
The approximate CMYK value of #181D2A is C:43% M:31% Y:0% K:84%. 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.
