Skip to content

#66F646 Color

#66F646 is rgb(102, 246, 70) in RGB, hsl(109, 91%, 62%) in HSL, and about cmyk(59%, 0%, 72%, 4%) 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 8.99. Black text is the more readable choice on this background.

#66F646
HEX#66F646
RGBrgb(102, 246, 70)
HSLhsl(109, 91%, 62%)
HSVhsv(109, 72%, 96%)
CMYKcmyk(59%, 0%, 72%, 4%)
OKLCHoklch(86.2% 0.245 140.4)
LABlab(86.70% -63.16 67.66)
LCHlch(86.70% 92.56 133.03)

What #66F646 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 #66F646, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

SGBUS Green#55DD33ΔE 8.99Screamin' Green#66FF66ΔE 9.48Spring Frost#87FF2AΔE 12.95Erin#00FF40ΔE 14.71Lawn Green#7CFC00ΔE 15.66Lime Green#32CD32ΔE 16.01

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

#66F646 Channel Values

How #66F646 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 246 · B 708-bit channels as sent to the display
HSLH 109° · S 91% · L 62%Easiest model for building lighter and darker variants
HSVH 109° · S 72% · V 96%Matches the picker in most design tools
CMYKC 59% · M 0% · Y 72% · K 4%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.42:1 vs white · 14.84:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66F646 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 text14.84:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66F646 in the contrast checker.

Colors That Go With #66F646

Pairings derived from color-wheel relationships. The complementary color sits opposite #66F646; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66F646
Complementary
#D646F6
Analogous
#BEF646
Analogous
#46F67E
Triadic
#4666F6
Triadic
#F64666
Split comp.
#7E46F6
Split comp.
#F646BE

Tints & Shades of #66F646

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

#7AF75E
#8EF977
#A3FA8F
#BBFBAC
#CFFCC5
#E3FDDD

Shades

#46F41F
#31DB0A
#28B408
#1F8D07
#176605
#0D3A03

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66F646.

How #66F646 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#66F646
Protanopia#E5E548
Protanomaly#C0EC47
Deuteranopia#D4D451
Deuteranomaly#B3E34D
Tritanopia#87E9E9
Tritanomaly#7BEEBE
Achromatopsia#D9D9D9

Test a full palette in the color blindness simulator.

Using #66F646 in Code

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

CSS custom property--color-66f646: #66F646;
CSS backgroundbackground-color: #66F646;
Tailwind configcolors: { 'color-66f646': '#66F646' }
SwiftUIColor(red: 0.400, green: 0.965, blue: 0.275)
Android XML<color name="color_66f646">#66F646</color>
SVG fillfill="#66F646"

More Green Colors

#66F646 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66F646 Frequently Asked Questions

What color is #66F646?

#66F646 is a light green — rgb(102, 246, 70) in RGB and hsl(109, 91%, 62%) 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 8.99.

What is the RGB value of #66F646?

#66F646 is rgb(102, 246, 70) — red 102, green 246, and blue 70 on the 0-255 scale.

What is the CMYK value of #66F646?

#66F646 converts to approximately cmyk(59%, 0%, 72%, 4%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66F646 be black or white?

Black text is the more readable choice. #66F646 scores 1.42:1 against white and 14.84:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66F646 as a CSS color keyword?

No. #66F646 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 15.66, which is visibly different.

Open #66F646 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.