#666F8F Color Information

Hex color code: #666F8F

The hex color #666F8F is a understated blue with RGB values of (102, 111, 143) and HSL of (227°, 17%, 48%). It is widely used in graphic design.

Try:

Color NameSlate Gray

HEX

#666F8F

RGB

102, 111, 143

HSL

227°, 17%, 48%

CMYK

29%, 22%, 0%, 44%

Shades

CSS Usage

color: #666F8F;
background-color: #666F8F;
border-color: #666F8F;
box-shadow: 0 0 10px #666F8F;
border: 2px solid #666F8F;

Tailwind Usage

bg-[#666F8F]
text-[#666F8F]
border-[#666F8F]
shadow-[0_0_10px_666F8F]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #666F8F, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #666F8F; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #666F8F; 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 #666F8F; background-color: #666F8F15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #666F8F20; border-left: 4px solid #666F8F; }

Link / Accent

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

a { color: #666F8F; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #666F8F in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

102, 111, 143

Red: 102 / Green: 111 / Blue: 143

HSL

227°, 17%, 48%

Hue: 227° / Saturation: 17% / Lightness: 48%

CMYK

29%, 22%, 0%, 44%

Cyan: 29% / Magenta: 22% / Yellow: 0% / Key: 44%

What color is #666F8F?

#666F8F is a blue-purple hue associated with creativity and luxury.

Color Shades

Complementary Colors

8F8666

Color Palette

HEX to RGB

Convert #666F8F to RGB:

rgb(102, 111, 143)HEX to RGB Converter →

HEX to HSL

Convert #666F8F to HSL:

hsl(227, 17%, 48%)RGB to HSL Converter →

HEX to CMYK

Convert #666F8F to CMYK:

cmyk(29%, 22%, 0%, 44%)Color Converter →

Color Meaning and Usage

A neutral blue tone, #666F8F has RGB (102, 111, 143) and HSL (227°, 17%, 48%). 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 #666F8F is #8F8666, creating high-contrast pairings. For softer combinations, try analogous colors like #66838F.

Use #666F8F in CSS: color: #666F8F or background-color: #666F8F. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #666F8F

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

Contrast Ratio: 4.24:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #666F8F?

#666F8F is a neutral blue color - a blue-purple hue that evokes creativity and luxury.

What is the RGB value of #666F8F?

#666F8F in RGB is (102, 111, 143) - 102 red, 111 green, and 143 blue.

How to use #666F8F in CSS?

Use #666F8F directly in your CSS properties like color or background-color.

What colors go well with #666F8F?

#8F8666 (complementary), #66838F (analogous), and #464C62 (lighter shade) work well with #666F8F.