The hexadecimal color code #155A8E represents a dark shade in the cyan family. In the RGB color model, this color is composed of 21 red, 90 green, and 142 blue, which translates to approximately 8% red, 35% green, and 56% 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, #155A8E has a hue of 206 degrees, a saturation level of 74%, and a lightness value of 32%. The hue angle of 206° places this color firmly in the cyan spectrum. In the HSV/HSB color model, this translates to a hue of 206°, saturation of 85%, and brightness/value of 56%.
For print applications using the CMYK color model, #155A8E would be reproduced using 85% cyan, 37% magenta, 0% yellow, and 44% black. The closest web-safe color is #006699, 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 #155A8E with other colors, consider its complementary color at hue 26° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 1399438, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #155A8E
Tailwind CSS
sky-800
HEX
#155A8E
RGB
rgb(21, 90, 142)
RGB %
8%, 35%, 56%
HSL
hsl(206, 74%, 32%)
HSV
hsv(206, 85%, 56%)
CMYK
85%, 37%, 0%, 44%
Decimal
1399438
Web Safe
#006699
🎨 Color Schemes for #155A8E
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #155A8E
🌗 Shades and Tints of #155A8E
Shades (adding black)
Tints (adding white)
🎚️ Tones of #155A8E
Tones (adding gray / desaturating)
🌈 Hue Variations of #155A8E
Hue Variations (shifting the color spectrum)
👁️ Preview of #155A8E in Use
Text on #155A8E
This demonstrates text readability on the color background. (Click to edit)
#155A8E as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #155A8E
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 Cool Azure is a medium, vibrant, cool cyan color with a hue angle of 206°, saturation of 74%, and lightness of 32%. Its RGB value is (21, 90, 142) and its CMYK breakdown is C:85% M:37% Y:0% K:44%.
This is a Summer (Cool) color palette archetype. Calm, Clarity, Communication, Tech. Cyan/Teal promotes clear thinking and emotional balance.
Frequently Asked Questions About #155A8E
What is the HEX code for Dark Cool Azure? +
The HEX code for Dark Cool Azure is #155A8E. In CSS you can use it directly as color: #155A8E; or as a background: background-color: #155A8E;. 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 #155A8E? +
The RGB value of #155A8E is rgb(21, 90, 142). This means the color contains 21 out of 255 parts red, 90 out of 255 parts green, and 142 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(21, 90, 142);
What is the HSL value of #155A8E? +
The HSL value of #155A8E is hsl(206, 74%, 32%). The hue is 206°, placing it in the cyan family on the color wheel. The saturation is 74%, making it vibrant. The lightness is 32%, 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 #155A8E a warm or cool color? +
#155A8E is classified as a cool color based on its hue angle of 206°. 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 #155A8E? +
The approximate CMYK value of #155A8E is C:85% M:37% Y:0% K:44%. 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.
