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#66E029 Color

#66E029 is rgb(102, 224, 41) in RGB, hsl(100, 75%, 52%) in HSL, and about cmyk(54%, 0%, 82%, 12%) in CMYK. It has no registered color name of its own — the closest is SGBUS Green (#55DD33), clearly related but distinguishable side by side at ΔE 5.22. Black text is the more readable choice on this background.

#66E029
HEX#66E029
RGBrgb(102, 224, 41)
HSLhsl(100, 75%, 52%)
HSVhsv(100, 82%, 88%)
CMYKcmyk(54%, 0%, 82%, 12%)
OKLCHoklch(80.5% 0.235 138)
LABlab(79.91% -57.37 69.79)
LCHlch(79.91% 90.34 129.42)

What #66E029 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 #66E029, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

SGBUS Green#55DD33ΔE 5.22Lime Green#32CD32ΔE 12.93Spring Frost#87FF2AΔE 14.16French Lime#9EFD38ΔE 14.74Kelly Green#4CBB17ΔE 15.14Vivid Malachite#00CC33ΔE 15.86

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

#66E029 Channel Values

How #66E029 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 224 · B 418-bit channels as sent to the display
HSLH 100° · S 75% · L 52%Easiest model for building lighter and darker variants
HSVH 100° · S 82% · V 88%Matches the picker in most design tools
CMYKC 54% · M 0% · Y 82% · K 12%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.71:1 vs white · 12.26:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66E029 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 text1.71:1AA normal AA large AAA normal
TextBlack text12.26:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66E029 in the contrast checker.

Colors That Go With #66E029

Pairings derived from color-wheel relationships. The complementary color sits opposite #66E029; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66E029
Complementary
#A329E0
Analogous
#C2E029
Analogous
#29E047
Triadic
#2966E0
Triadic
#E02966
Split comp.
#4729E0
Split comp.
#E029C2

Tints & Shades of #66E029

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

#7CE548
#8FE963
#A6ED82
#B9F19D
#CFF5BC
#E2F9D7

Shades

#56C91D
#49AA18
#3B8A14
#307010
#22500B
#153107

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66E029.

How #66E029 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#66E029
Protanopia#D1D12C
Protanomaly#B1D72B
Deuteranopia#C3C338
Deuteranomaly#A6CF32
Tritanopia#82D3D3
Tritanomaly#78D9AA
Achromatopsia#C6C6C6

Test a full palette in the color blindness simulator.

Using #66E029 in Code

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

CSS custom property--color-66e029: #66E029;
CSS backgroundbackground-color: #66E029;
Tailwind configcolors: { 'color-66e029': '#66E029' }
SwiftUIColor(red: 0.400, green: 0.878, blue: 0.161)
Android XML<color name="color_66e029">#66E029</color>
SVG fillfill="#66E029"

More Green Colors

#66E029 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66E029 Frequently Asked Questions

What color is #66E029?

#66E029 is a mid-tone green — rgb(102, 224, 41) in RGB and hsl(100, 75%, 52%) in HSL. It carries no registered color name of its own; the closest named color is SGBUS Green (#55DD33), which is clearly related but distinguishable side by side at a CIE76 distance of 5.22.

What is the RGB value of #66E029?

#66E029 is rgb(102, 224, 41) — red 102, green 224, and blue 41 on the 0-255 scale.

What is the CMYK value of #66E029?

#66E029 converts to approximately cmyk(54%, 0%, 82%, 12%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66E029 be black or white?

Black text is the more readable choice. #66E029 scores 1.71:1 against white and 12.26:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66E029 as a CSS color keyword?

No. #66E029 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 limegreen (#32CD32) at a CIE76 distance of 12.93, which is visibly different.

Open #66E029 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.