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#CFFF66 Color

#CFFF66 is rgb(207, 255, 102) in RGB, hsl(79, 100%, 70%) in HSL, and about cmyk(19%, 0%, 60%, 0%) in CMYK. It has no registered color name of its own — the closest is Inchworm (#B2EC5D), clearly related but distinguishable side by side at ΔE 9.07. Black text is the more readable choice on this background.

#CFFF66
HEX#CFFF66
RGBrgb(207, 255, 102)
HSLhsl(79, 100%, 70%)
HSVhsv(79, 60%, 100%)
CMYKcmyk(19%, 0%, 60%, 0%)
OKLCHoklch(93.7% 0.186 124.6)
LABlab(94.47% -31.95 65.63)
LCHlch(94.47% 73.00 115.96)

What #CFFF66 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 #CFFF66, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Inchworm#B2EC5DΔE 9.07Maximum Green Yellow#D9E650ΔE 15.27June Bud#BDDA57ΔE 15.64Pear#D1E231ΔE 17.39Green Lizard#A7F432ΔE 17.39Yellow Green#9ACD32ΔE 17.74

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

#CFFF66 Channel Values

How #CFFF66 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 207 · G 255 · B 1028-bit channels as sent to the display
HSLH 79° · S 100% · L 70%Easiest model for building lighter and darker variants
HSVH 79° · S 60% · V 100%Matches the picker in most design tools
CMYKC 19% · M 0% · Y 60% · K 0%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.16:1 vs white · 18.15:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #CFFF66 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 text1.16:1AA normal AA large AAA normal
TextBlack text18.15:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #CFFF66 in the contrast checker.

Colors That Go With #CFFF66

Pairings derived from color-wheel relationships. The complementary color sits opposite #CFFF66; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#CFFF66
Complementary
#9666FF
Analogous
#FFE366
Analogous
#82FF66
Triadic
#66CFFF
Triadic
#FF66CF
Split comp.
#6682FF
Split comp.
#E366FF

Tints & Shades of #CFFF66

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

#D5FF7A
#DBFF8F
#E2FFA3
#E8FFB8
#EFFFCC
#F5FFE0

Shades

#C0FF38
#B0FF05
#92D600
#70A300
#507500
#2D4200

Want a full 50-950 ramp with semantic roles? Generate design tokens from #CFFF66.

How #CFFF66 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#CFFF66
Protanopia#F8F867
Protanomaly#E9FB66
Deuteranopia#F1F16A
Deuteranomaly#E4F668
Tritanopia#DFF2F2
Tritanomaly#D8F8CA
Achromatopsia#EEEEEE

Test a full palette in the color blindness simulator.

Using #CFFF66 in Code

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

CSS custom property--color-cfff66: #CFFF66;
CSS backgroundbackground-color: #CFFF66;
Tailwind configcolors: { 'color-cfff66': '#CFFF66' }
SwiftUIColor(red: 0.812, green: 1.000, blue: 0.400)
Android XML<color name="color_cfff66">#CFFF66</color>
SVG fillfill="#CFFF66"

More Green Colors

#CFFF66 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#CFFF66 Frequently Asked Questions

What color is #CFFF66?

#CFFF66 is a light green — rgb(207, 255, 102) in RGB and hsl(79, 100%, 70%) in HSL. It carries no registered color name of its own; the closest named color is Inchworm (#B2EC5D), which is clearly related but distinguishable side by side at a CIE76 distance of 9.07.

What is the RGB value of #CFFF66?

#CFFF66 is rgb(207, 255, 102) — red 207, green 255, and blue 102 on the 0-255 scale.

What is the CMYK value of #CFFF66?

#CFFF66 converts to approximately cmyk(19%, 0%, 60%, 0%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #CFFF66 be black or white?

Black text is the more readable choice. #CFFF66 scores 1.16:1 against white and 18.15:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #CFFF66 as a CSS color keyword?

No. #CFFF66 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 17.74, which is visibly different.

Open #CFFF66 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.