#66ADDD Color Information

Hex color code: #66ADDD

The hex color #66ADDD is a tranquil blue with RGB values of (102, 173, 221) and HSL of (204°, 64%, 63%). It is popular in mobile app design.

Try:

Color NameCornflower Blue

HEX

#66ADDD

RGB

102, 173, 221

HSL

204°, 64%, 63%

CMYK

54%, 22%, 0%, 13%

Shades

CSS Usage

color: #66ADDD;
background-color: #66ADDD;
border-color: #66ADDD;
box-shadow: 0 0 10px #66ADDD;
border: 2px solid #66ADDD;

Tailwind Usage

bg-[#66ADDD]
text-[#66ADDD]
border-[#66ADDD]
shadow-[0_0_10px_66ADDD]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #66ADDD, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #66ADDD; color: #000000; }

Badge

New Feature

.badge { background-color: #66ADDD; 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 #66ADDD; background-color: #66ADDD15; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #66ADDD20; border-left: 4px solid #66ADDD; }

Link / Accent

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

a { color: #66ADDD; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #66ADDD in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

102, 173, 221

Red: 102 / Green: 173 / Blue: 221

HSL

204°, 64%, 63%

Hue: 204° / Saturation: 64% / Lightness: 63%

CMYK

54%, 22%, 0%, 13%

Cyan: 54% / Magenta: 22% / Yellow: 0% / Key: 13%

What color is #66ADDD?

#66ADDD is a cyan-blue hue associated with trust and professionalism.

Color Shades

Complementary Colors

DD9564

Color Palette

HEX to RGB

Convert #66ADDD to RGB:

rgb(102, 173, 221)HEX to RGB Converter →

HEX to HSL

Convert #66ADDD to HSL:

hsl(204, 64%, 63%)RGB to HSL Converter →

HEX to CMYK

Convert #66ADDD to CMYK:

cmyk(54%, 22%, 0%, 13%)Color Converter →

Color Meaning and Usage

A serene blue tone, #66ADDD has RGB (102, 173, 221) and HSL (204°, 64%, 63%). Known for evoking trust and professionalism, this cyan-blue hue is typically applied in digital products. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #66ADDD is #DD9564, creating high-contrast pairings. For softer combinations, try analogous colors like #64DDD1.

Use #66ADDD in CSS: color: #66ADDD or background-color: #66ADDD. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #66ADDD

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

Contrast Ratio: 8.59:1

WCAG AA: Pass

WCAG AAA: Pass

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #66ADDD?

#66ADDD is a serene blue color - a cyan-blue hue that evokes trust and professionalism.

What is the RGB value of #66ADDD?

#66ADDD in RGB is (102, 173, 221) - 102 red, 173 green, and 221 blue.

How to use #66ADDD in CSS?

Use #66ADDD directly in your CSS properties like color or background-color.

What colors go well with #66ADDD?

#DD9564 (complementary), #64DDD1 (analogous), and #2C8AC9 (lighter shade) work well with #66ADDD.