#303540 Color Information

Hex color code: #303540

#303540 is a dark blue color. In RGB it is (48, 53, 64), and in HSL it is (221°, 14%, 22%). It is frequently seen in web interfaces.

Try:

Color NameDark Slate Gray

HEX

#303540

RGB

48, 53, 64

HSL

221°, 14%, 22%

CMYK

25%, 17%, 0%, 75%

Shades

CSS Usage

color: #303540;
background-color: #303540;
border-color: #303540;
box-shadow: 0 0 10px #303540;
border: 2px solid #303540;

Tailwind Usage

bg-[#303540]
text-[#303540]
border-[#303540]
shadow-[0_0_10px_303540]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #303540, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #303540; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #303540; 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 #303540; background-color: #30354015; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #30354020; border-left: 4px solid #303540; }

Link / Accent

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

a { color: #303540; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #303540 in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

48, 53, 64

Red: 48 / Green: 53 / Blue: 64

HSL

221°, 14%, 22%

Hue: 221° / Saturation: 14% / Lightness: 22%

CMYK

25%, 17%, 0%, 75%

Cyan: 25% / Magenta: 17% / Yellow: 0% / Key: 75%

What color is #303540?

#303540 is a desaturated neutral associated with balance and subtlety.

Color Shades

Complementary Colors

403B30

Color Palette

HEX to RGB

Convert #303540 to RGB:

rgb(48, 53, 64)HEX to RGB Converter →

HEX to HSL

Convert #303540 to HSL:

hsl(221, 14%, 22%)RGB to HSL Converter →

HEX to CMYK

Convert #303540 to CMYK:

cmyk(25%, 17%, 0%, 75%)Color Converter →

Color Meaning and Usage

#303540 is a deep blue color with RGB values of 48, 53, 64 and HSL of 221°, 14%, 22%. This desaturated neutral evokes balance and subtlety, making it suitable for widely used in graphic design. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #303540 is #403B30, creating high-contrast pairings. For softer combinations, try analogous colors like #303D40.

Use #303540 in CSS: color: #303540 or background-color: #303540. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #303540

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

Contrast Ratio: 1.71:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #303540?

#303540 is a deep blue color - a desaturated neutral that evokes balance and subtlety.

What is the RGB value of #303540?

#303540 in RGB is (48, 53, 64) - 48 red, 53 green, and 64 blue.

How to use #303540 in CSS?

Use #303540 directly in your CSS properties like color or background-color.

What colors go well with #303540?

#403B30 (complementary), #303D40 (analogous), and #0F1114 (lighter shade) work well with #303540.