#66aec0

Fountain Blue

Closest match (95% match)

Color formats

RGB

rgb(102, 174, 192)

Red, Green, Blue components

HSL

hsl(192, 42%, 58%)

Hue, Saturation, Lightness

CMYK

cmyk(47, 9, 0, 25)

Print color encoding

Luminance

0.369

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#66aec0

#c07866

Analogous (Adjacent)

#66c0a5

#66aec0

#6681c0

Triadic

#66aec0

#c066ae

#aec066

Split complementary

#66aec0

#c06681

#c0a566

Complete conversion table

HEX

#66AEC0

RGB

rgb(102,174,192)

RGBA

rgba(102,174,192, 1)

HSL

hsl(192,41.67%,57.65%)

OKLCH (Modern CSS)

oklch(0.71 0.08 215.7)

CSS Variable

--color: #66aec0;

Preview

Readability and Typography

Headline Test

This text demonstrates the reading experience on this background color.

Headline Test

This text demonstrates the reading experience on this background color.

UI Component Set

This is an example alert bar using the selected color.

SOLIDSOFTOUTLINE

Product Mockup

4582 •••• •••• 9018

CARDHOLDER

JOHN DOE

VALID

12/28

Mobile application

Customer support

Hi! How can we help you today?

I love this new color! 😍

Data visualization

Weekly growth

+1,240

12.5%

WED

2,450

Contrast

Contrast and readability (WCAG)

On white background

2.51

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

8.38

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#66aec0#b6b6c0

ORIG

SIM

Deuteranopia (green)

#66aec0#8681c0

ORIG

SIM

Tritanopia (blue)

#66aec0#6a7e8c

ORIG

SIM

Monochrome (color blind)

#66aec0#a4a4a4

Mixing guide

How to mix this color using physical paints or printing inks.

MIXING PALETTE

56%

30%

14%

RYB PIGMENTS

Ultramarine blue

Pigment

56%

Titanium white

Pigment

30%

Cadmium yellow

Pigment

14%

Unlike light, mixing paints makes colors darker. This simulation mimics the behavior of physical pigments.

Physical properties

Perceptual and light-related properties derived from the digital color.

Spectral relationship

Cyan hue

485–500 nm • closest visible-spectrum range

750 nm

380 nm

Visual temperature

Cool

A perceptual warm–cool classification. Kelvin does not apply to an arbitrary interface color.

Cool

Neutral

Warm

Luminance (brightness)

36.9%

Dark • relative luminance

50%

100%

An RGB color is produced by combined screen light, so this range is a visual comparison rather than an exact physical wavelength.

Gradient gallery

Generate premium CSS backgrounds and textures from your color.

Similar & Related Colors

Mathematically computed harmonies, shades, and similar tones for this color.

Blue Eye Samurai

#75AEBD

Finnish Fiord

#5DB0BE

Glacier

#78B1BF

Viking

#4DB1C8

Contessa

#C07866

Ship Cove

#6681C0

Tradewind

#66C0A5

Fuchsia Pink

#C066AE

Wild Willow

#AEC066

Contessa

#C06681

Anakiwa

#A2EAFD

Jelly Bean

#277586