Skip to content

#66E704 Color

#66E704 is rgb(102, 231, 4) in RGB, hsl(94, 97%, 46%) in HSL, and about cmyk(56%, 0%, 98%, 9%) in CMYK. It has no registered color name of its own — the closest is Spring Frost (#87FF2A), clearly related but distinguishable side by side at ΔE 8.91. Black text is the more readable choice on this background.

#66E704
HEX#66E704
RGBrgb(102, 231, 4)
HSLhsl(94, 97%, 46%)
HSVhsv(94, 98%, 91%)
CMYKcmyk(56%, 0%, 98%, 9%)
OKLCHoklch(82.2% 0.251 137.5)
LABlab(81.97% -60.32 76.93)
LCHlch(81.97% 97.76 128.10)

What #66E704 Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #66E704, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Spring Frost#87FF2AΔE 8.91Lawn Green#7CFC00ΔE 9.4Chartreuse#7FFF00ΔE 10.7SGBUS Green#55DD33ΔE 11.86Bright Green#66FF00ΔE 11.92French Lime#9EFD38ΔE 13.33

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

#66E704 Channel Values

How #66E704 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 102 · G 231 · B 48-bit channels as sent to the display
HSLH 94° · S 97% · L 46%Easiest model for building lighter and darker variants
HSVH 94° · S 98% · V 91%Matches the picker in most design tools
CMYKC 56% · M 0% · Y 98% · K 9%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.62:1 vs white · 13:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66E704 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.

Fails AAWhite text1.62:1AA normal AA large AAA normal
TextBlack text13:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66E704 in the contrast checker.

Colors That Go With #66E704

Pairings derived from color-wheel relationships. The complementary color sits opposite #66E704; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66E704
Complementary
#8404E7
Analogous
#D8E704
Analogous
#04E713
Triadic
#0466E7
Triadic
#E70466
Split comp.
#1304E7
Split comp.
#E704D8

Tints & Shades of #66E704

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

#78FB13
#8FFC3B
#A3FD5E
#BAFD86
#CEFEAA
#E5FED2

Shades

#59C903
#4BAB03
#3E8D02
#316F02
#245001
#163201

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66E704.

How #66E704 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#66E704
Protanopia#D8D80E
Protanomaly#B5DE0A
Deuteranopia#C8C826
Deuteranomaly#AAD51D
Tritanopia#85DADA
Tritanomaly#7ADFAD
Achromatopsia#CBCBCB

Test a full palette in the color blindness simulator.

Using #66E704 in Code

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

CSS custom property--color-66e704: #66E704;
CSS backgroundbackground-color: #66E704;
Tailwind configcolors: { 'color-66e704': '#66E704' }
SwiftUIColor(red: 0.400, green: 0.906, blue: 0.016)
Android XML<color name="color_66e704">#66E704</color>
SVG fillfill="#66E704"

More Green Colors

#66E704 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66E704 Frequently Asked Questions

What color is #66E704?

#66E704 is a mid-tone green — rgb(102, 231, 4) in RGB and hsl(94, 97%, 46%) in HSL. It carries no registered color name of its own; the closest named color is Spring Frost (#87FF2A), which is clearly related but distinguishable side by side at a CIE76 distance of 8.91.

What is the RGB value of #66E704?

#66E704 is rgb(102, 231, 4) — red 102, green 231, and blue 4 on the 0-255 scale.

What is the CMYK value of #66E704?

#66E704 converts to approximately cmyk(56%, 0%, 98%, 9%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66E704 be black or white?

Black text is the more readable choice. #66E704 scores 1.62:1 against white and 13:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66E704 as a CSS color keyword?

No. #66E704 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 lawngreen (#7CFC00) at a CIE76 distance of 9.4, which is clearly related but distinguishable side by side.

Open #66E704 in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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