#21bd00

Harlequin

Closest match (84% match)

Color formats

RGB

rgb(33, 189, 0)

Red, Green, Blue components

HSL

hsl(110, 100%, 37%)

Hue, Saturation, Lightness

CMYK

cmyk(83, 0, 100, 26)

Print color encoding

Luminance

0.367

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#21bd00

#9c00bd

Analogous (Adjacent)

#80bd00

#21bd00

#00bd3e

Triadic

#21bd00

#0021bd

#bd0021

Split complementary

#21bd00

#3d00bd

#bd0080

Complete conversion table

HEX

#21BD00

RGB

rgb(33,189,0)

RGBA

rgba(33,189,0, 1)

HSL

hsl(109.52,100%,37.06%)

OKLCH (Modern CSS)

oklch(0.69 0.23 141.6)

CSS Variable

--color: #21bd00;

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

2.52

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

8.34

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#21bd00#6a6800

ORIG

SIM

Deuteranopia (green)

#21bd00#141700

ORIG

SIM

Tritanopia (blue)

#21bd00#296774

ORIG

SIM

Monochrome (color blind)

#21bd00#80b06f

Mixing guide

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

MIXING PALETTE

47%

33%

20%

RYB PIGMENTS

Ultramarine blue

Pigment

47%

Cadmium yellow

Pigment

33%

Ivory black

Pigment

20%

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)

36.7%

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.

Sour Apple Rings

#33BB00

Green Glimmer

#00BB00

Lusty Lizard

#00BB11

Lush Plains

#22BB22

Purple

#9C00BD

Jade

#00BD3E

Limeade

#80BD00

International Klein Blue

#0021BD

Monza

#BD0021

Purple

#3D00BD

Screamin' Green

#73FB53

Japanese Laurel

#008200