#1B303C Color Information

Hex color code: #1B303C

#1B303C is a deep blue color. In RGB it is (27, 48, 60), and in HSL it is (202°, 38%, 17%). It is commonly used in modern UI design.

Try:

Color NameDark Slate Gray

HEX

#1B303C

RGB

27, 48, 60

HSL

202°, 38%, 17%

CMYK

55%, 20%, 0%, 76%

Shades

CSS Usage

color: #1B303C;
background-color: #1B303C;
border-color: #1B303C;
box-shadow: 0 0 10px #1B303C;
border: 2px solid #1B303C;

Tailwind Usage

bg-[#1B303C]
text-[#1B303C]
border-[#1B303C]
shadow-[0_0_10px_1B303C]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #1B303C, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #1B303C; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #1B303C; 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 #1B303C; background-color: #1B303C15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #1B303C20; border-left: 4px solid #1B303C; }

Link / Accent

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

a { color: #1B303C; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #1B303C in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

27, 48, 60

Red: 27 / Green: 48 / Blue: 60

HSL

202°, 38%, 17%

Hue: 202° / Saturation: 38% / Lightness: 17%

CMYK

55%, 20%, 0%, 76%

Cyan: 55% / Magenta: 20% / Yellow: 0% / Key: 76%

What color is #1B303C?

#1B303C is a very dark shade associated with sophistication and elegance.

Color Shades

Complementary Colors

3C271B

Color Palette

HEX to RGB

Convert #1B303C to RGB:

rgb(27, 48, 60)HEX to RGB Converter →

HEX to HSL

Convert #1B303C to HSL:

hsl(202, 38%, 17%)RGB to HSL Converter →

HEX to CMYK

Convert #1B303C to CMYK:

cmyk(55%, 20%, 0%, 76%)Color Converter →

Color Meaning and Usage

A dark blue tone, #1B303C has RGB (27, 48, 60) and HSL (202°, 38%, 17%). 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 #1B303C is #3C271B, creating high-contrast pairings. For softer combinations, try analogous colors like #1B3C37.

Use #1B303C in CSS: color: #1B303C or background-color: #1B303C. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #1B303C

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

Contrast Ratio: 1.53:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #1B303C?

#1B303C is a dark blue color - a very dark shade that evokes sophistication and elegance.

What is the RGB value of #1B303C?

#1B303C in RGB is (27, 48, 60) - 27 red, 48 green, and 60 blue.

How to use #1B303C in CSS?

Use #1B303C directly in your CSS properties like color or background-color.

What colors go well with #1B303C?

#3C271B (complementary), #1B3C37 (analogous), and #030607 (lighter shade) work well with #1B303C.