#155B5B Color Information

Hex color code: #155B5B

The hex color #155B5B is a rich cyan with RGB values of (21, 91, 91) and HSL of (180°, 63%, 22%). It is popular in mobile app design.

Try:

Color NameDark Slate Gray

HEX

#155B5B

RGB

21, 91, 91

HSL

180°, 63%, 22%

CMYK

77%, 0%, 0%, 64%

Shades

CSS Usage

color: #155B5B;
background-color: #155B5B;
border-color: #155B5B;
box-shadow: 0 0 10px #155B5B;
border: 2px solid #155B5B;

Tailwind Usage

bg-[#155B5B]
text-[#155B5B]
border-[#155B5B]
shadow-[0_0_10px_155B5B]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #155B5B, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #155B5B; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #155B5B; color: #FFFFFF; }

Text Highlight

The quick brown fox jumps over the lazy dog. highlighted text example shows how the color looks as a text highlight.

Card

Card Title

This card uses your color as a border accent.

.card-accent { border: 2px solid #155B5B; background-color: #155B5B15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #155B5B20; border-left: 4px solid #155B5B; }

Link / Accent

This is a paragraph with a link using your color. The color can be applied to interactive elements.

a { color: #155B5B; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #155B5B in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

21, 91, 91

Red: 21 / Green: 91 / Blue: 91

HSL

180°, 63%, 22%

Hue: 180° / Saturation: 63% / Lightness: 22%

CMYK

77%, 0%, 0%, 64%

Cyan: 77% / Magenta: 0% / Yellow: 0% / Key: 64%

What color is #155B5B?

#155B5B is a cyan-blue hue associated with trust and professionalism.

Color Shades

Complementary Colors

5B1515

Color Palette

HEX to RGB

Convert #155B5B to RGB:

rgb(21, 91, 91)HEX to RGB Converter →

HEX to HSL

Convert #155B5B to HSL:

hsl(180, 63%, 22%)RGB to HSL Converter →

HEX to CMYK

Convert #155B5B to CMYK:

cmyk(77%, 0%, 0%, 64%)Color Converter →

Color Meaning and Usage

#155B5B is a dark cyan color with RGB values of 21, 91, 91 and HSL of 180°, 63%, 22%. This cyan-blue hue evokes trust and professionalism, making it suitable for often used for branding and logos. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #155B5B is #5B1515, creating high-contrast pairings. For softer combinations, try analogous colors like #155B38.

Use #155B5B in CSS: color: #155B5B or background-color: #155B5B. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #155B5B

Sample text on this color - The quick brown fox jumps over the lazy dog.

Contrast Ratio: 2.68:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #155B5B?

#155B5B is a dark cyan color - a cyan-blue hue that evokes trust and professionalism.

What is the RGB value of #155B5B?

#155B5B in RGB is (21, 91, 91) - 21 red, 91 green, and 91 blue.

How to use #155B5B in CSS?

Use #155B5B directly in your CSS properties like color or background-color.

What colors go well with #155B5B?

#5B1515 (complementary), #155B38 (analogous), and #071D1D (lighter shade) work well with #155B5B.