#666CDB Color Information

Hex color code: #666CDB

A serene blue shade, #666CDB appears as (102, 108, 219) in RGB and (237°, 62%, 63%) in HSL. It is often used for branding and logos.

Try:

Color NameSlate Blue

HEX

#666CDB

RGB

102, 108, 219

HSL

237°, 62%, 63%

CMYK

53%, 51%, 0%, 14%

Shades

CSS Usage

color: #666CDB;
background-color: #666CDB;
border-color: #666CDB;
box-shadow: 0 0 10px #666CDB;
border: 2px solid #666CDB;

Tailwind Usage

bg-[#666CDB]
text-[#666CDB]
border-[#666CDB]
shadow-[0_0_10px_666CDB]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #666CDB, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #666CDB; color: #000000; }

Badge

New Feature

.badge { background-color: #666CDB; 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 #666CDB; background-color: #666CDB15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #666CDB20; border-left: 4px solid #666CDB; }

Link / Accent

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

a { color: #666CDB; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #666CDB in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

102, 108, 219

Red: 102 / Green: 108 / Blue: 219

HSL

237°, 62%, 63%

Hue: 237° / Saturation: 62% / Lightness: 63%

CMYK

53%, 51%, 0%, 14%

Cyan: 53% / Magenta: 51% / Yellow: 0% / Key: 14%

What color is #666CDB?

#666CDB is a blue-purple hue associated with creativity and luxury.

Color Shades

Complementary Colors

DBD566

Color Palette

HEX to RGB

Convert #666CDB to RGB:

rgb(102, 108, 219)HEX to RGB Converter →

HEX to HSL

Convert #666CDB to HSL:

hsl(237, 62%, 63%)RGB to HSL Converter →

HEX to CMYK

Convert #666CDB to CMYK:

cmyk(53%, 51%, 0%, 14%)Color Converter →

Color Meaning and Usage

A peaceful blue tone, #666CDB has RGB (102, 108, 219) and HSL (237°, 62%, 63%). Known for evoking creativity and luxury, this blue-purple hue is often used for buttons, highlights, and accents. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #666CDB is #DBD566, creating high-contrast pairings. For softer combinations, try analogous colors like #66A6DB.

Use #666CDB in CSS: color: #666CDB or background-color: #666CDB. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #666CDB

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

Contrast Ratio: 4.73:1

WCAG AA: Pass

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #666CDB?

#666CDB is a peaceful blue color - a blue-purple hue that evokes creativity and luxury.

What is the RGB value of #666CDB?

#666CDB in RGB is (102, 108, 219) - 102 red, 108 green, and 219 blue.

How to use #666CDB in CSS?

Use #666CDB directly in your CSS properties like color or background-color.

What colors go well with #666CDB?

#DBD566 (complementary), #66A6DB (analogous), and #2F36C6 (lighter shade) work well with #666CDB.