#51feee

Aquamarine

Closest match (91% match)

Color formats

RGB

rgb(81, 254, 238)

Red, Green, Blue components

HSL

hsl(174, 99%, 66%)

Hue, Saturation, Lightness

CMYK

cmyk(68, 0, 6, 0)

Print color encoding

Luminance

0.788

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#51feee

#fe5161

Analogous (Adjacent)

#51fe98

#51feee

#51b7fe

Triadic

#51feee

#ee51fe

#feee51

Split complementary

#51feee

#fe51b7

#fe9851

Complete conversion table

HEX

#51FEEE

RGB

rgb(81,254,238)

RGBA

rgba(81,254,238, 1)

HSL

hsl(174.45,98.86%,65.69%)

OKLCH (Modern CSS)

oklch(0.91 0.14 186.0)

CSS Variable

--color: #51feee;

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

1.25

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

16.76

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#51feee#f7f7ee

ORIG

SIM

Deuteranopia (green)

#51feee#8a80ee

ORIG

SIM

Tritanopia (blue)

#51feee#5a9aad

ORIG

SIM

Monochrome (color blind)

#51feee#e6e6e6

Mixing guide

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

MIXING PALETTE

50%

32%

19%

RYB PIGMENTS

Ultramarine blue

Pigment

50%

Titanium white

Pigment

32%

Cadmium yellow

Pigment

19%

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)

78.8%

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.

Ice Temple

#11FFEE

Master Sword Blue

#00FFEE

Vibrant Mint

#00FFE5

Kaltes Klares Wasser

#0FFEF9

Carnation

#FE5161

Malibu

#51B7FE

Screamin' Green

#51FE98

Heliotrope

#EE51FE

Gorse

#FEEE51

Hot Pink

#FE51B7

Anakiwa

#9CFFFF

Robin's Egg Blue

#00C0B2