#121F2B Color Information

Hex color code: #121F2B

A intense blue shade, #121F2B appears as (18, 31, 43) in RGB and (209°, 41%, 12%) in HSL. It is widely used in graphic design.

Try:

Color NameBlack

HEX

#121F2B

RGB

18, 31, 43

HSL

209°, 41%, 12%

CMYK

58%, 28%, 0%, 83%

Shades

CSS Usage

color: #121F2B;
background-color: #121F2B;
border-color: #121F2B;
box-shadow: 0 0 10px #121F2B;
border: 2px solid #121F2B;

Tailwind Usage

bg-[#121F2B]
text-[#121F2B]
border-[#121F2B]
shadow-[0_0_10px_121F2B]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #121F2B, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #121F2B; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #121F2B; 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 #121F2B; background-color: #121F2B15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #121F2B20; border-left: 4px solid #121F2B; }

Link / Accent

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

a { color: #121F2B; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #121F2B in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

18, 31, 43

Red: 18 / Green: 31 / Blue: 43

HSL

209°, 41%, 12%

Hue: 209° / Saturation: 41% / Lightness: 12%

CMYK

58%, 28%, 0%, 83%

Cyan: 58% / Magenta: 28% / Yellow: 0% / Key: 83%

What color is #121F2B?

#121F2B is a very dark shade associated with sophistication and elegance.

Color Shades

Complementary Colors

2B1E12

Color Palette

HEX to RGB

Convert #121F2B to RGB:

rgb(18, 31, 43)HEX to RGB Converter →

HEX to HSL

Convert #121F2B to HSL:

hsl(209, 41%, 12%)RGB to HSL Converter →

HEX to CMYK

Convert #121F2B to CMYK:

cmyk(58%, 28%, 0%, 83%)Color Converter →

Color Meaning and Usage

A rich blue tone, #121F2B has RGB (18, 31, 43) and HSL (209°, 41%, 12%). Known for evoking sophistication and elegance, this very dark shade is typically applied in digital products. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #121F2B is #2B1E12, creating high-contrast pairings. For softer combinations, try analogous colors like #122B2B.

Use #121F2B in CSS: color: #121F2B or background-color: #121F2B. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #121F2B

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

Contrast Ratio: 1.26:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #121F2B?

#121F2B is a rich blue color - a very dark shade that evokes sophistication and elegance.

What is the RGB value of #121F2B?

#121F2B in RGB is (18, 31, 43) - 18 red, 31 green, and 43 blue.

How to use #121F2B in CSS?

Use #121F2B directly in your CSS properties like color or background-color.

What colors go well with #121F2B?

#2B1E12 (complementary), #122B2B (analogous), and #000000 (lighter shade) work well with #121F2B.