#183F49 Color Information

Hex color code: #183F49

The hex color #183F49 is a intense cyan with RGB values of (24, 63, 73) and HSL of (192°, 51%, 19%). It is widely used in graphic design.

Try:
Color NameDark Slate Gray
HEX
#183F49
RGB
24, 63, 73
HSL
192°, 51%, 19%
CMYK
67%, 14%, 0%, 71%

Shades

CSS Usage
color: #183F49;
background-color: #183F49;
border-color: #183F49;
box-shadow: 0 0 10px #183F49;
border: 2px solid #183F49;
Tailwind Usage
bg-[#183F49]
text-[#183F49]
border-[#183F49]
shadow-[0_0_10px_183F49]

Generate Gradient

→
Gradient CSS
background: linear-gradient(90deg, #183F49, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #183F49; color: #FFFFFF; }

Badge

New Feature
.badge { background-color: #183F49; 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 #183F49; background-color: #183F4915; }

Alert / Toast

This is an alert using your color as accent.
.alert { background-color: #183F4920; border-left: 4px solid #183F49; }

Link / Accent

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

a { color: #183F49; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #183F49 in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

24, 63, 73

Red: 24 / Green: 63 / Blue: 73

HSL

192°, 51%, 19%

Hue: 192° / Saturation: 51% / Lightness: 19%

CMYK

67%, 14%, 0%, 71%

Cyan: 67% / Magenta: 14% / Yellow: 0% / Key: 71%

What color is #183F49?

#183F49 is a very dark shade associated with sophistication and elegance.

Color Shades

FFFFFF
BAC5C8
748C92
2F525B

Complementary Colors

492218

Color Palette

492218Complementary
18493AAnalogous
182749
49183FTriadic
3F4918
000000Shade
050D0FShade
2A7183Shade
3DA3BDShade

HEX to RGB

Convert #183F49 to RGB:

rgb(24, 63, 73)HEX to RGB Converter →

HEX to HSL

Convert #183F49 to HSL:

hsl(192, 51%, 19%)RGB to HSL Converter →

HEX to CMYK

Convert #183F49 to CMYK:

cmyk(67%, 14%, 0%, 71%)Color Converter →

Color Meaning and Usage

A rich cyan tone, #183F49 has RGB (24, 63, 73) and HSL (192°, 51%, 19%). Known for evoking sophistication and elegance, this very dark shade is a common choice for dashboards and SaaS products. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #183F49 is #492218, creating high-contrast pairings. For softer combinations, try analogous colors like #18493A.

Use #183F49 in CSS: color: #183F49 or background-color: #183F49. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #183F49

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

Contrast Ratio: 1.85:1
WCAG AA: Fail
WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #183F49?

#183F49 is a rich cyan color - a very dark shade that evokes sophistication and elegance.

What is the RGB value of #183F49?

#183F49 in RGB is (24, 63, 73) - 24 red, 63 green, and 73 blue.

How to use #183F49 in CSS?

Use #183F49 directly in your CSS properties like color or background-color.

What colors go well with #183F49?

#492218 (complementary), #18493A (analogous), and #050D0F (lighter shade) work well with #183F49.