#21372C Color Information

Hex color code: #21372C

#21372C is a rich cyan color. In RGB it is (33, 55, 44), and in HSL it is (150°, 25%, 17%). It is popular in mobile app design.

Try:

Color NameDark Slate Gray

HEX

#21372C

RGB

33, 55, 44

HSL

150°, 25%, 17%

CMYK

40%, 0%, 20%, 78%

Shades

CSS Usage

color: #21372C;
background-color: #21372C;
border-color: #21372C;
box-shadow: 0 0 10px #21372C;
border: 2px solid #21372C;

Tailwind Usage

bg-[#21372C]
text-[#21372C]
border-[#21372C]
shadow-[0_0_10px_21372C]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #21372C, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #21372C; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #21372C; 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 #21372C; background-color: #21372C15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #21372C20; border-left: 4px solid #21372C; }

Link / Accent

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

a { color: #21372C; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #21372C in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

33, 55, 44

Red: 33 / Green: 55 / Blue: 44

HSL

150°, 25%, 17%

Hue: 150° / Saturation: 25% / Lightness: 17%

CMYK

40%, 0%, 20%, 78%

Cyan: 40% / Magenta: 0% / Yellow: 20% / Key: 78%

What color is #21372C?

#21372C is a very dark shade associated with sophistication and elegance.

Color Shades

Complementary Colors

36212B

Color Palette

HEX to RGB

Convert #21372C to RGB:

rgb(33, 55, 44)HEX to RGB Converter →

HEX to HSL

Convert #21372C to HSL:

hsl(150, 25%, 17%)RGB to HSL Converter →

HEX to CMYK

Convert #21372C to CMYK:

cmyk(40%, 0%, 20%, 78%)Color Converter →

Color Meaning and Usage

A rich cyan tone, #21372C has RGB (33, 55, 44) and HSL (150°, 25%, 17%). Known for evoking sophistication and elegance, this very dark shade is frequently chosen for fintech and productivity apps. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #21372C is #36212B, creating high-contrast pairings. For softer combinations, try analogous colors like #213621.

Use #21372C in CSS: color: #21372C or background-color: #21372C. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #21372C

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

Contrast Ratio: 1.65:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #21372C?

#21372C is a rich cyan color - a very dark shade that evokes sophistication and elegance.

What is the RGB value of #21372C?

#21372C in RGB is (33, 55, 44) - 33 red, 55 green, and 44 blue.

How to use #21372C in CSS?

Use #21372C directly in your CSS properties like color or background-color.

What colors go well with #21372C?

#36212B (complementary), #213621 (analogous), and #040605 (lighter shade) work well with #21372C.