#1B3F41 Color Information

Hex color code: #1B3F41

The hex color #1B3F41 is a rich cyan with RGB values of (27, 63, 65) and HSL of (183°, 41%, 18%). It is popular in mobile app design.

Try:

Color NameDark Slate Gray

HEX

#1B3F41

RGB

27, 63, 65

HSL

183°, 41%, 18%

CMYK

58%, 3%, 0%, 75%

Shades

CSS Usage

color: #1B3F41;
background-color: #1B3F41;
border-color: #1B3F41;
box-shadow: 0 0 10px #1B3F41;
border: 2px solid #1B3F41;

Tailwind Usage

bg-[#1B3F41]
text-[#1B3F41]
border-[#1B3F41]
shadow-[0_0_10px_1B3F41]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #1B3F41, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #1B3F41; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #1B3F41; 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 #1B3F41; background-color: #1B3F4115; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #1B3F4120; border-left: 4px solid #1B3F41; }

Link / Accent

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

a { color: #1B3F41; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #1B3F41 in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

27, 63, 65

Red: 27 / Green: 63 / Blue: 65

HSL

183°, 41%, 18%

Hue: 183° / Saturation: 41% / Lightness: 18%

CMYK

58%, 3%, 0%, 75%

Cyan: 58% / Magenta: 3% / Yellow: 0% / Key: 75%

What color is #1B3F41?

#1B3F41 is a very dark shade associated with sophistication and elegance.

Color Shades

Complementary Colors

411D1B

Color Palette

HEX to RGB

Convert #1B3F41 to RGB:

rgb(27, 63, 65)HEX to RGB Converter →

HEX to HSL

Convert #1B3F41 to HSL:

hsl(183, 41%, 18%)RGB to HSL Converter →

HEX to CMYK

Convert #1B3F41 to CMYK:

cmyk(58%, 3%, 0%, 75%)Color Converter →

Color Meaning and Usage

A dark cyan tone, #1B3F41 has RGB (27, 63, 65) and HSL (183°, 41%, 18%). Known for evoking sophistication and elegance, this very dark shade is commonly used in modern UI design. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #1B3F41 is #411D1B, creating high-contrast pairings. For softer combinations, try analogous colors like #1B4130.

Use #1B3F41 in CSS: color: #1B3F41 or background-color: #1B3F41. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #1B3F41

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

Contrast Ratio: 1.83:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #1B3F41?

#1B3F41 is a dark cyan color - a very dark shade that evokes sophistication and elegance.

What is the RGB value of #1B3F41?

#1B3F41 in RGB is (27, 63, 65) - 27 red, 63 green, and 65 blue.

How to use #1B3F41 in CSS?

Use #1B3F41 directly in your CSS properties like color or background-color.

What colors go well with #1B3F41?

#411D1B (complementary), #1B4130 (analogous), and #050A0B (lighter shade) work well with #1B3F41.