#303D40 Color Information

Hex color code: #303D40

The hex color #303D40 is a dramatic cyan with RGB values of (48, 61, 64) and HSL of (191°, 14%, 22%). It is typically applied in digital products.

Try:

Color NameDark Slate Gray

HEX

#303D40

RGB

48, 61, 64

HSL

191°, 14%, 22%

CMYK

25%, 5%, 0%, 75%

Shades

CSS Usage

color: #303D40;
background-color: #303D40;
border-color: #303D40;
box-shadow: 0 0 10px #303D40;
border: 2px solid #303D40;

Tailwind Usage

bg-[#303D40]
text-[#303D40]
border-[#303D40]
shadow-[0_0_10px_303D40]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #303D40, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #303D40; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #303D40; 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 #303D40; background-color: #303D4015; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #303D4020; border-left: 4px solid #303D40; }

Link / Accent

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

a { color: #303D40; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #303D40 in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

48, 61, 64

Red: 48 / Green: 61 / Blue: 64

HSL

191°, 14%, 22%

Hue: 191° / Saturation: 14% / Lightness: 22%

CMYK

25%, 5%, 0%, 75%

Cyan: 25% / Magenta: 5% / Yellow: 0% / Key: 75%

What color is #303D40?

#303D40 is a desaturated neutral associated with balance and subtlety.

Color Shades

Complementary Colors

403330

Color Palette

HEX to RGB

Convert #303D40 to RGB:

rgb(48, 61, 64)HEX to RGB Converter →

HEX to HSL

Convert #303D40 to HSL:

hsl(191, 14%, 22%)RGB to HSL Converter →

HEX to CMYK

Convert #303D40 to CMYK:

cmyk(25%, 5%, 0%, 75%)Color Converter →

Color Meaning and Usage

A deep cyan tone, #303D40 has RGB (48, 61, 64) and HSL (191°, 14%, 22%). Known for evoking balance and subtlety, this desaturated neutral is a solid option for clean and minimal interfaces. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #303D40 is #403330, creating high-contrast pairings. For softer combinations, try analogous colors like #30403B.

Use #303D40 in CSS: color: #303D40 or background-color: #303D40. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #303D40

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

Contrast Ratio: 1.87:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #303D40?

#303D40 is a deep cyan color - a desaturated neutral that evokes balance and subtlety.

What is the RGB value of #303D40?

#303D40 in RGB is (48, 61, 64) - 48 red, 61 green, and 64 blue.

How to use #303D40 in CSS?

Use #303D40 directly in your CSS properties like color or background-color.

What colors go well with #303D40?

#403330 (complementary), #30403B (analogous), and #0F1314 (lighter shade) work well with #303D40.