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#66BC20 Color

#66BC20 is rgb(102, 188, 32) in RGB, hsl(93, 71%, 43%) in HSL, and about cmyk(46%, 0%, 83%, 26%) in CMYK. It has no registered color name of its own — the closest is Kelly Green (#4CBB17), clearly related but distinguishable side by side at ΔE 7.36. Black text is the more readable choice on this background.

#66BC20
HEX#66BC20
RGBrgb(102, 188, 32)
HSLhsl(93, 71%, 43%)
HSVhsv(93, 83%, 74%)
CMYKcmyk(46%, 0%, 83%, 26%)
OKLCHoklch(71.3% 0.198 135.2)
LABlab(68.82% -45.22 62.31)
LCHlch(68.82% 76.99 125.97)

What #66BC20 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 #66BC20, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Kelly Green#4CBB17ΔE 7.36Microsoft Green#7DB700ΔE 10.68Green (RYB)#66B032ΔE 10.93Yellow Green#9ACD32ΔE 14.87Vine Green#38A32AΔE 16.13Sheen Green#8FD400ΔE 16.45

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

#66BC20 Channel Values

How #66BC20 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 188 · B 328-bit channels as sent to the display
HSLH 93° · S 71% · L 43%Easiest model for building lighter and darker variants
HSVH 93° · S 83% · V 74%Matches the picker in most design tools
CMYKC 46% · M 0% · Y 83% · K 26%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.39:1 vs white · 8.78:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66BC20 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 text2.39:1AA normal AA large AAA normal
TextBlack text8.78:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66BC20 in the contrast checker.

Colors That Go With #66BC20

Pairings derived from color-wheel relationships. The complementary color sits opposite #66BC20; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66BC20
Complementary
#7520BC
Analogous
#B4BC20
Analogous
#20BC28
Triadic
#2066BC
Triadic
#BC2066
Split comp.
#2820BC
Split comp.
#BC20B4

Tints & Shades of #66BC20

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

#79DB29
#8FE14C
#A5E76F
#B8EC8E
#CEF2B1
#E4F8D3

Shades

#58A11B
#4C8C18
#3E7113
#325C10
#24410B
#182C07

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66BC20.

How #66BC20 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#66BC20
Protanopia#B1B122
Protanomaly#99B621
Deuteranopia#A6A62C
Deuteranomaly#91AF27
Tritanopia#7AB1B1
Tritanomaly#73B68E
Achromatopsia#A7A7A7

Test a full palette in the color blindness simulator.

Using #66BC20 in Code

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

CSS custom property--color-66bc20: #66BC20;
CSS backgroundbackground-color: #66BC20;
Tailwind configcolors: { 'color-66bc20': '#66BC20' }
SwiftUIColor(red: 0.400, green: 0.737, blue: 0.125)
Android XML<color name="color_66bc20">#66BC20</color>
SVG fillfill="#66BC20"

More Green Colors

#66BC20 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66BC20 Frequently Asked Questions

What color is #66BC20?

#66BC20 is a mid-tone green — rgb(102, 188, 32) in RGB and hsl(93, 71%, 43%) in HSL. It carries no registered color name of its own; the closest named color is Kelly Green (#4CBB17), which is clearly related but distinguishable side by side at a CIE76 distance of 7.36.

What is the RGB value of #66BC20?

#66BC20 is rgb(102, 188, 32) — red 102, green 188, and blue 32 on the 0-255 scale.

What is the CMYK value of #66BC20?

#66BC20 converts to approximately cmyk(46%, 0%, 83%, 26%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66BC20 be black or white?

Black text is the more readable choice. #66BC20 scores 2.39:1 against white and 8.78:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66BC20 as a CSS color keyword?

No. #66BC20 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 yellowgreen (#9ACD32) at a CIE76 distance of 14.87, which is visibly different.

Open #66BC20 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.