#66818A Color Information

Hex color code: #66818A

The hex color #66818A is a balanced blue with RGB values of (102, 129, 138) and HSL of (195°, 15%, 47%). It is frequently seen in web interfaces.

Try:

Color NameSlate Gray

HEX

#66818A

RGB

102, 129, 138

HSL

195°, 15%, 47%

CMYK

26%, 7%, 0%, 46%

Shades

CSS Usage

color: #66818A;
background-color: #66818A;
border-color: #66818A;
box-shadow: 0 0 10px #66818A;
border: 2px solid #66818A;

Tailwind Usage

bg-[#66818A]
text-[#66818A]
border-[#66818A]
shadow-[0_0_10px_66818A]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #66818A, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #66818A; color: #000000; }

Badge

New Feature

.badge { background-color: #66818A; color: #000000; }

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 #66818A; background-color: #66818A15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #66818A20; border-left: 4px solid #66818A; }

Link / Accent

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

a { color: #66818A; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #66818A in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

102, 129, 138

Red: 102 / Green: 129 / Blue: 138

HSL

195°, 15%, 47%

Hue: 195° / Saturation: 15% / Lightness: 47%

CMYK

26%, 7%, 0%, 46%

Cyan: 26% / Magenta: 7% / Yellow: 0% / Key: 46%

What color is #66818A?

#66818A is a cyan-blue hue associated with trust and professionalism.

Color Shades

Complementary Colors

8A6F66

Color Palette

HEX to RGB

Convert #66818A to RGB:

rgb(102, 129, 138)HEX to RGB Converter →

HEX to HSL

Convert #66818A to HSL:

hsl(195, 15%, 47%)RGB to HSL Converter →

HEX to CMYK

Convert #66818A to CMYK:

cmyk(26%, 7%, 0%, 46%)Color Converter →

Color Meaning and Usage

A muted blue tone, #66818A has RGB (102, 129, 138) and HSL (195°, 15%, 47%). 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 #66818A is #8A6F66, creating high-contrast pairings. For softer combinations, try analogous colors like #668A81.

Use #66818A in CSS: color: #66818A or background-color: #66818A. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #66818A

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

Contrast Ratio: 5.07:1

WCAG AA: Pass

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #66818A?

#66818A is a muted blue color - a cyan-blue hue that evokes trust and professionalism.

What is the RGB value of #66818A?

#66818A in RGB is (102, 129, 138) - 102 red, 129 green, and 138 blue.

How to use #66818A in CSS?

Use #66818A directly in your CSS properties like color or background-color.

What colors go well with #66818A?

#8A6F66 (complementary), #668A81 (analogous), and #45585E (lighter shade) work well with #66818A.