#42e5fd

Cyan / Aqua

Closest match (90% match)

Color formats

RGB

rgb(66, 229, 253)

Red, Green, Blue components

HSL

hsl(188, 98%, 63%)

Hue, Saturation, Lightness

CMYK

cmyk(74, 9, 0, 1)

Print color encoding

Luminance

0.643

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#42e5fd

#fd5a42

Analogous (Adjacent)

#42fdb8

#42e5fd

#4287fd

Triadic

#42e5fd

#fd42e5

#e5fd42

Split complementary

#42e5fd

#fd4287

#fdb842

Complete conversion table

HEX

#42E5FD

RGB

rgb(66,229,253)

RGBA

rgba(66,229,253, 1)

HSL

hsl(187.7,97.91%,62.55%)

OKLCH (Modern CSS)

oklch(0.85 0.13 209.6)

CSS Variable

--color: #42e5fd;

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

1.52

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

13.86

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#42e5fd#f0f0fd

ORIG

SIM

Deuteranopia (green)

#42e5fd#877afd

ORIG

SIM

Tritanopia (blue)

#42e5fd#4a8898

ORIG

SIM

Monochrome (color blind)

#42e5fd#d2d2d2

Mixing guide

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

MIXING PALETTE

58%

25%

16%

RYB PIGMENTS

Ultramarine blue

Pigment

58%

Titanium white

Pigment

25%

Cadmium yellow

Pigment

16%

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)

64.3%

Light • 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.

Vaporwave Blue

#22DDFF

Sparky Blue

#22EEFF

Splashing Wave

#44DDFF

Brain Freeze

#00EEFF

Sunset Orange

#FD5A42

Dodger Blue

#4287FD

Aquamarine

#42FDB8

Razzle Dazzle Rose

#FD42E5

Golden Fizz

#E5FD42

Violet Red

#FD4287

Anakiwa

#91FFFF

Pacific Blue

#00A9C0