#666BD1 Color Information

Hex color code: #666BD1

The hex color #666BD1 is a serene blue with RGB values of (102, 107, 209) and HSL of (237°, 54%, 61%). It is popular in mobile app design.

Try:

Color NameSlate Blue

HEX

#666BD1

RGB

102, 107, 209

HSL

237°, 54%, 61%

CMYK

51%, 49%, 0%, 18%

Shades

CSS Usage

color: #666BD1;
background-color: #666BD1;
border-color: #666BD1;
box-shadow: 0 0 10px #666BD1;
border: 2px solid #666BD1;

Tailwind Usage

bg-[#666BD1]
text-[#666BD1]
border-[#666BD1]
shadow-[0_0_10px_666BD1]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #666BD1, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #666BD1; color: #000000; }

Badge

New Feature

.badge { background-color: #666BD1; 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 #666BD1; background-color: #666BD115; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #666BD120; border-left: 4px solid #666BD1; }

Link / Accent

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

a { color: #666BD1; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #666BD1 in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

102, 107, 209

Red: 102 / Green: 107 / Blue: 209

HSL

237°, 54%, 61%

Hue: 237° / Saturation: 54% / Lightness: 61%

CMYK

51%, 49%, 0%, 18%

Cyan: 51% / Magenta: 49% / Yellow: 0% / Key: 18%

What color is #666BD1?

#666BD1 is a blue-purple hue associated with creativity and luxury.

Color Shades

Complementary Colors

D1CC66

Color Palette

HEX to RGB

Convert #666BD1 to RGB:

rgb(102, 107, 209)HEX to RGB Converter →

HEX to HSL

Convert #666BD1 to HSL:

hsl(237, 54%, 61%)RGB to HSL Converter →

HEX to CMYK

Convert #666BD1 to CMYK:

cmyk(51%, 49%, 0%, 18%)Color Converter →

Color Meaning and Usage

A peaceful blue tone, #666BD1 has RGB (102, 107, 209) and HSL (237°, 54%, 61%). Known for evoking creativity and luxury, this blue-purple hue is a solid option for clean and minimal interfaces. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #666BD1 is #D1CC66, creating high-contrast pairings. For softer combinations, try analogous colors like #66A1D1.

Use #666BD1 in CSS: color: #666BD1 or background-color: #666BD1. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #666BD1

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

Contrast Ratio: 4.59:1

WCAG AA: Pass

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #666BD1?

#666BD1 is a peaceful blue color - a blue-purple hue that evokes creativity and luxury.

What is the RGB value of #666BD1?

#666BD1 in RGB is (102, 107, 209) - 102 red, 107 green, and 209 blue.

How to use #666BD1 in CSS?

Use #666BD1 directly in your CSS properties like color or background-color.

What colors go well with #666BD1?

#D1CC66 (complementary), #66A1D1 (analogous), and #363CB5 (lighter shade) work well with #666BD1.