#303B4B Color Information

Hex color code: #303B4B

#303B4B is a intense blue color. In RGB it is (48, 59, 75), and in HSL it is (216°, 22%, 24%). It is widely used in graphic design.

Try:

Color NameDark Slate Gray

HEX

#303B4B

RGB

48, 59, 75

HSL

216°, 22%, 24%

CMYK

36%, 21%, 0%, 71%

Shades

CSS Usage

color: #303B4B;
background-color: #303B4B;
border-color: #303B4B;
box-shadow: 0 0 10px #303B4B;
border: 2px solid #303B4B;

Tailwind Usage

bg-[#303B4B]
text-[#303B4B]
border-[#303B4B]
shadow-[0_0_10px_303B4B]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #303B4B, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #303B4B; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #303B4B; 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 #303B4B; background-color: #303B4B15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #303B4B20; border-left: 4px solid #303B4B; }

Link / Accent

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

a { color: #303B4B; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #303B4B in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

48, 59, 75

Red: 48 / Green: 59 / Blue: 75

HSL

216°, 22%, 24%

Hue: 216° / Saturation: 22% / Lightness: 24%

CMYK

36%, 21%, 0%, 71%

Cyan: 36% / Magenta: 21% / Yellow: 0% / Key: 71%

What color is #303B4B?

#303B4B is a blue-purple hue associated with creativity and luxury.

Color Shades

Complementary Colors

4B4030

Color Palette

HEX to RGB

Convert #303B4B to RGB:

rgb(48, 59, 75)HEX to RGB Converter →

HEX to HSL

Convert #303B4B to HSL:

hsl(216, 22%, 24%)RGB to HSL Converter →

HEX to CMYK

Convert #303B4B to CMYK:

cmyk(36%, 21%, 0%, 71%)Color Converter →

Color Meaning and Usage

A dark blue tone, #303B4B has RGB (48, 59, 75) and HSL (216°, 22%, 24%). Known for evoking creativity and luxury, this blue-purple hue is popular for illustrations and friendly visual themes. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #303B4B is #4B4030, creating high-contrast pairings. For softer combinations, try analogous colors like #30484B.

Use #303B4B in CSS: color: #303B4B or background-color: #303B4B. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #303B4B

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

Contrast Ratio: 1.85:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #303B4B?

#303B4B is a dark blue color - a blue-purple hue that evokes creativity and luxury.

What is the RGB value of #303B4B?

#303B4B in RGB is (48, 59, 75) - 48 red, 59 green, and 75 blue.

How to use #303B4B in CSS?

Use #303B4B directly in your CSS properties like color or background-color.

What colors go well with #303B4B?

#4B4030 (complementary), #30484B (analogous), and #12161C (lighter shade) work well with #303B4B.