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#66F568 Color

#66F568 is rgb(102, 245, 104) in RGB, hsl(121, 88%, 68%) in HSL, and about cmyk(58%, 0%, 58%, 4%) in CMYK. It has no registered color name of its own — the closest is Screamin' Green (#66FF66), clearly related but distinguishable side by side at ΔE 6.13. Black text is the more readable choice on this background.

#66F568
HEX#66F568
RGBrgb(102, 245, 104)
HSLhsl(121, 88%, 68%)
HSVhsv(121, 58%, 96%)
CMYKcmyk(58%, 0%, 58%, 4%)
OKLCHoklch(86.2% 0.221 143.6)
LABlab(86.63% -60.55 54.50)
LCHlch(86.63% 81.46 138.01)

What #66F568 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 #66F568, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Screamin' Green#66FF66ΔE 6.13Malachite#0BDA51ΔE 11.94SGBUS Green#55DD33ΔE 13.76Spring Green#00FF7FΔE 14.79Lime Green#32CD32ΔE 15.08Vivid Malachite#00CC33ΔE 16.13

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

#66F568 Channel Values

How #66F568 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 245 · B 1048-bit channels as sent to the display
HSLH 121° · S 88% · L 68%Easiest model for building lighter and darker variants
HSVH 121° · S 58% · V 96%Matches the picker in most design tools
CMYKC 58% · M 0% · Y 58% · K 4%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.42:1 vs white · 14.83:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66F568 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 text1.42:1AA normal AA large AAA normal
TextBlack text14.83:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66F568 in the contrast checker.

Colors That Go With #66F568

Pairings derived from color-wheel relationships. The complementary color sits opposite #66F568; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66F568
Complementary
#F566F3
Analogous
#ABF566
Analogous
#66F5B0
Triadic
#6866F5
Triadic
#F56866
Split comp.
#B066F5
Split comp.
#F566AB

Tints & Shades of #66F568

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

#79F67B
#91F892
#A4F9A5
#B7FAB8
#CAFCCB
#E2FDE3

Shades

#3AF23E
#0FF013
#0DC510
#09950C
#076908
#043E05

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66F568.

How #66F568 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#66F568
Protanopia#E5E569
Protanomaly#BFEB69
Deuteranopia#D4D46F
Deuteranomaly#B2E26D
Tritanopia#84E9E9
Tritanomaly#79EEC3
Achromatopsia#D9D9D9

Test a full palette in the color blindness simulator.

Using #66F568 in Code

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

CSS custom property--color-66f568: #66F568;
CSS backgroundbackground-color: #66F568;
Tailwind configcolors: { 'color-66f568': '#66F568' }
SwiftUIColor(red: 0.400, green: 0.961, blue: 0.408)
Android XML<color name="color_66f568">#66F568</color>
SVG fillfill="#66F568"

More Green Colors

#66F568 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66F568 Frequently Asked Questions

What color is #66F568?

#66F568 is a light green — rgb(102, 245, 104) in RGB and hsl(121, 88%, 68%) in HSL. It carries no registered color name of its own; the closest named color is Screamin' Green (#66FF66), which is clearly related but distinguishable side by side at a CIE76 distance of 6.13.

What is the RGB value of #66F568?

#66F568 is rgb(102, 245, 104) — red 102, green 245, and blue 104 on the 0-255 scale.

What is the CMYK value of #66F568?

#66F568 converts to approximately cmyk(58%, 0%, 58%, 4%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66F568 be black or white?

Black text is the more readable choice. #66F568 scores 1.42:1 against white and 14.83:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66F568 as a CSS color keyword?

No. #66F568 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 springgreen (#00FF7F) at a CIE76 distance of 14.79, which is visibly different.

Open #66F568 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.