The hexadecimal color code #040F15 represents a very dark shade in the cyan family. In the RGB color model, this color is composed of 4 red, 15 green, and 21 blue, which translates to approximately 2% red, 6% green, and 8% 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, #040F15 has a hue of 201 degrees, a saturation level of 68%, and a lightness value of 5%. The hue angle of 201° places this color firmly in the cyan spectrum. In the HSV/HSB color model, this translates to a hue of 201°, saturation of 81%, and brightness/value of 8%.
For print applications using the CMYK color model, #040F15 would be reproduced using 81% cyan, 29% magenta, 0% yellow, and 92% black. The closest web-safe color is #000000, 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 #040F15 with other colors, consider its complementary color at hue 21° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 266005, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #040F15
Tailwind CSS
gray-950
HEX
#040F15
RGB
rgb(4, 15, 21)
RGB %
2%, 6%, 8%
HSL
hsl(201, 68%, 5%)
HSV
hsv(201, 81%, 8%)
CMYK
81%, 29%, 0%, 92%
Decimal
266005
Web Safe
#000000
🎨 Color Schemes for #040F15
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #040F15
🌗 Shades and Tints of #040F15
Shades (adding black)
Tints (adding white)
🎚️ Tones of #040F15
Tones (adding gray / desaturating)
🌈 Hue Variations of #040F15
Hue Variations (shifting the color spectrum)
👁️ Preview of #040F15 in Use
Text on #040F15
This demonstrates text readability on the color background. (Click to edit)
#040F15 as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #040F15
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 Azure is a dark, vibrant, cool cyan color with a hue angle of 201°, saturation of 68%, and lightness of 5%. Its RGB value is (4, 15, 21) and its CMYK breakdown is C:81% M:29% Y:0% K:92%.
This is a Winter (Deep) color palette archetype. Calm, Clarity, Communication, Tech. Cyan/Teal promotes clear thinking and emotional balance.
Frequently Asked Questions About #040F15
What is the HEX code for Deep Cool Azure? +
The HEX code for Deep Cool Azure is #040F15. In CSS you can use it directly as color: #040F15; or as a background: background-color: #040F15;. 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 #040F15? +
The RGB value of #040F15 is rgb(4, 15, 21). This means the color contains 4 out of 255 parts red, 15 out of 255 parts green, and 21 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(4, 15, 21);
What is the HSL value of #040F15? +
The HSL value of #040F15 is hsl(201, 68%, 5%). The hue is 201°, placing it in the cyan family on the color wheel. The saturation is 68%, making it vibrant. The lightness is 5%, 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 #040F15 a warm or cool color? +
#040F15 is classified as a cool color based on its hue angle of 201°. 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 #040F15? +
The approximate CMYK value of #040F15 is C:81% M:29% Y:0% K:92%. 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.
