Harlequin (#3FFF00)

The hex code for Harlequin is #3FFF00. It is rgb(63, 255, 0) in RGB, hsl(105, 100%, 50%) in HSL, and about cmyk(75%, 0%, 100%, 0%) in CMYK — a mid-tone green. Black text is the more readable choice on this background.

#3FFF00

HEX#3FFF00

RGBrgb(63, 255, 0)

HSLhsl(105, 100%, 50%)

HSVhsv(105, 100%, 100%)

CMYKcmyk(75%, 0%, 100%, 0%)

OKLCHoklch(87.2% 0.287 141)

LABlab(88.35% -74.78 81.68)

LCHlch(88.35% 110.74 132.48)

Colors Closest to Harlequin

Harlequin is a registered color name. These are the named colors nearest to it, measured as CIE76 distance in CIELAB — a perceptual scale, so the ordering matches what the eye sees rather than how close the raw RGB numbers happen to sit.

Neon Green#39FF14ΔE 1.82 Lime#00FF00ΔE 4.58 Bright Green#66FF00ΔE 7.19 Erin#00FF40ΔE 11.8 Lawn Green#7CFC00ΔE 13.54 Chartreuse#7FFF00ΔE 13.58

Browse the full index of named colors A-Z or every green in the library.

#3FFF00 Channel Values

How Harlequin breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 63 · G 255 · B 0	8-bit channels as sent to the display
HSL	H 105° · S 100% · L 50%	Easiest model for building lighter and darker variants
HSV	H 105° · S 100% · V 100%	Matches the picker in most design tools
CMYK	C 75% · M 0% · Y 100% · K 0%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	1.35:1 vs white · 15.52:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Harlequin background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text1.35:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text15.52:1AA normal ✓AA large ✓AAA normal ✓

Need a specific ratio against another background? Open #3FFF00 in the contrast checker.

Colors That Go With Harlequin

Pairings derived from color-wheel relationships. The complementary color sits opposite Harlequin; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of Harlequin

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #3FFF00.

How Harlequin Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#3FFF00

Protanopia#ECEC0E

Protanomaly#BFF408

Deuteranopia#D8D82D

Deuteranomaly#AFE922

Tritanopia#75F0F0

Tritanomaly#64F6C0

Achromatopsia#DDDDDD

Test a full palette in the color blindness simulator.

Using #3FFF00 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--harlequin: #3FFF00;

CSS backgroundbackground-color: #3FFF00;

Tailwind configcolors: { 'harlequin': '#3FFF00' }

SwiftUIColor(red: 0.247, green: 1.000, blue: 0.000)

Android XML<color name="harlequin">#3FFF00</color>

SVG fillfill="#3FFF00"

More Green Colors

Harlequin sits in the greenfamily. These are its neighbours across that family's full range, each with its own breakdown.

40826d 3ddc84 414833 3d7a00 415224 3d6600 42ffb7 3cb371 435a16 3c6300 44500c 3b7a57 5b6238 6d9a79 8fd400 a1bf6e b8cf91 d0fae5 ecfdf5 006b3c 00bd00 082108 1c352d 319177

#3FFF00 Frequently Asked Questions

What is the hex code for Harlequin?

The hex code for Harlequin is #3FFF00. That is rgb(63, 255, 0) in RGB, hsl(105, 100%, 50%) in HSL, and approximately cmyk(75%, 0%, 100%, 0%) in CMYK.

What is the RGB value of #3FFF00?

#3FFF00 is rgb(63, 255, 0) — red 63, green 255, and blue 0 on the 0-255 scale.

What is the CMYK value of #3FFF00?

#3FFF00 converts to approximately cmyk(75%, 0%, 100%, 0%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #3FFF00 be black or white?

Black text is the more readable choice. #3FFF00 scores 1.35:1 against white and 15.52:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #3FFF00 as a CSS color keyword?

No. #3FFF00 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is lime (#00FF00) at a CIE76 distance of 4.58, which is very hard to tell apart.

Open Harlequin in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every green in the color library, the guide to shades of green, or the full color library.