#4ded21

Harlequin

Closest match (96% match)

Color formats

RGB

rgb(77, 237, 33)

Red, Green, Blue components

HSL

hsl(107, 85%, 53%)

Hue, Saturation, Lightness

CMYK

cmyk(68, 0, 86, 7)

Print color encoding

Luminance

0.623

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#4ded21

#c121ed

Analogous (Adjacent)

#b3ed21

#4ded21

#21ed5b

Triadic

#4ded21

#214ded

#ed214d

Split complementary

#4ded21

#5b21ed

#ed21b3

Complete conversion table

HEX

#4DED21

RGB

rgb(77,237,33)

RGBA

rgba(77,237,33, 1)

HSL

hsl(107.06,85%,52.94%)

OKLCH (Modern CSS)

oklch(0.83 0.26 140.5)

CSS Variable

--color: #4ded21;

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

1.56

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

13.45

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#4ded21#939121

ORIG

SIM

Deuteranopia (green)

#4ded21#3c4021

ORIG

SIM

Tritanopia (blue)

#4ded21#5591a2

ORIG

SIM

Monochrome (color blind)

#4ded21#a1df87

Mixing guide

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

MIXING PALETTE

54%

41%

RYB PIGMENTS

Ultramarine blue

Pigment

54%

Cadmium yellow

Pigment

41%

Titanium white

Pigment

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

Green hue

495–570 nm • closest visible-spectrum range

750 nm

380 nm

Visual temperature

Warm

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

Cool

Neutral

Warm

Luminance (brightness)

62.3%

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.

Becquerel

#4BEC13

Nuclear Meltdown

#44EE00

Satin Lime

#33EE00

Furious Frog

#55EE00

Electric Violet

#C121ED

Malachite

#21ED5B

Inch Worm

#B3ED21

Royal Blue

#214DED

Che Guevara Red

#ED214D

Electric Violet

#5B21ED

Screamin' Green

#97FF69

Japanese Laurel

#00AF00