#21453F Color Information

Hex color code: #21453F

A dark cyan shade, #21453F appears as (33, 69, 63) in RGB and (170°, 35%, 20%) in HSL. It is frequently seen in web interfaces.

Try:

Color NameDark Slate Gray

HEX

#21453F

RGB

33, 69, 63

HSL

170°, 35%, 20%

CMYK

52%, 0%, 9%, 73%

Shades

CSS Usage

color: #21453F;
background-color: #21453F;
border-color: #21453F;
box-shadow: 0 0 10px #21453F;
border: 2px solid #21453F;

Tailwind Usage

bg-[#21453F]
text-[#21453F]
border-[#21453F]
shadow-[0_0_10px_21453F]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #21453F, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #21453F; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #21453F; 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 #21453F; background-color: #21453F15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #21453F20; border-left: 4px solid #21453F; }

Link / Accent

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

a { color: #21453F; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #21453F in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

33, 69, 63

Red: 33 / Green: 69 / Blue: 63

HSL

170°, 35%, 20%

Hue: 170° / Saturation: 35% / Lightness: 20%

CMYK

52%, 0%, 9%, 73%

Cyan: 52% / Magenta: 0% / Yellow: 9% / Key: 73%

What color is #21453F?

#21453F is a cyan-blue hue associated with trust and professionalism.

Color Shades

Complementary Colors

452127

Color Palette

HEX to RGB

Convert #21453F to RGB:

rgb(33, 69, 63)HEX to RGB Converter →

HEX to HSL

Convert #21453F to HSL:

hsl(170, 35%, 20%)RGB to HSL Converter →

HEX to CMYK

Convert #21453F to CMYK:

cmyk(52%, 0%, 9%, 73%)Color Converter →

Color Meaning and Usage

A dark cyan tone, #21453F has RGB (33, 69, 63) and HSL (170°, 35%, 20%). Known for evoking trust and professionalism, this cyan-blue hue is popular for illustrations and friendly visual themes. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #21453F is #452127, creating high-contrast pairings. For softer combinations, try analogous colors like #21452D.

Use #21453F in CSS: color: #21453F or background-color: #21453F. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #21453F

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

Contrast Ratio: 1.99:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #21453F?

#21453F is a dark cyan color - a cyan-blue hue that evokes trust and professionalism.

What is the RGB value of #21453F?

#21453F in RGB is (33, 69, 63) - 33 red, 69 green, and 63 blue.

How to use #21453F in CSS?

Use #21453F directly in your CSS properties like color or background-color.

What colors go well with #21453F?

#452127 (complementary), #21452D (analogous), and #081110 (lighter shade) work well with #21453F.