The hexadecimal color code #558B91 represents a medium shade in the cyan family. In the RGB color model, this color is composed of 85 red, 139 green, and 145 blue, which translates to approximately 33% red, 55% green, and 57% 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, #558B91 has a hue of 186 degrees, a saturation level of 26%, and a lightness value of 45%. The hue angle of 186° places this color firmly in the cyan spectrum. In the HSV/HSB color model, this translates to a hue of 186°, saturation of 41%, and brightness/value of 57%.
For print applications using the CMYK color model, #558B91 would be reproduced using 41% cyan, 4% magenta, 0% yellow, and 43% black. The closest web-safe color is #669999, 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 #558B91 with other colors, consider its complementary color at hue 6° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 5606289, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #558B91
Tailwind CSS
slate-500
HEX
#558B91
RGB
rgb(85, 139, 145)
RGB %
33%, 55%, 57%
HSL
hsl(186, 26%, 45%)
HSV
hsv(186, 41%, 57%)
CMYK
41%, 4%, 0%, 43%
Decimal
5606289
Web Safe
#669999
🎨 Color Schemes for #558B91
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #558B91
🌗 Shades and Tints of #558B91
Shades (adding black)
Tints (adding white)
🎚️ Tones of #558B91
Tones (adding gray / desaturating)
🌈 Hue Variations of #558B91
Hue Variations (shifting the color spectrum)
👁️ Preview of #558B91 in Use
Text on #558B91
This demonstrates text readability on the color background. (Click to edit)
#558B91 as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #558B91
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.
Cyan is a medium, moderately saturated, cool cyan color with a hue angle of 186°, saturation of 26%, and lightness of 45%. Its RGB value is (85, 139, 145) and its CMYK breakdown is C:41% M:4% Y:0% K:43%.
This is a Summer (Cool) color palette archetype. Calm, Clarity, Communication, Tech. Cyan/Teal promotes clear thinking and emotional balance.
Frequently Asked Questions About #558B91
What is the HEX code for Cyan? +
The HEX code for Cyan is #558B91. In CSS you can use it directly as color: #558B91; or as a background: background-color: #558B91;. 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 #558B91? +
The RGB value of #558B91 is rgb(85, 139, 145). This means the color contains 85 out of 255 parts red, 139 out of 255 parts green, and 145 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(85, 139, 145);
What is the HSL value of #558B91? +
The HSL value of #558B91 is hsl(186, 26%, 45%). The hue is 186°, placing it in the cyan family on the color wheel. The saturation is 26%, making it moderately saturated. The lightness is 45%, 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 #558B91 a warm or cool color? +
#558B91 is classified as a cool color based on its hue angle of 186°. 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 #558B91? +
The approximate CMYK value of #558B91 is C:41% M:4% Y:0% K:43%. 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.
