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#66C28F Color

#66C28F is rgb(102, 194, 143) in RGB, hsl(147, 43%, 58%) in HSL, and about cmyk(47%, 0%, 26%, 24%) in CMYK. It has no registered color name of its own — the closest is Medium Aquamarine (#66CDAA), clearly related but distinguishable side by side at ΔE 9.84. Black text is the more readable choice on this background.

#66C28F
HEX#66C28F
RGBrgb(102, 194, 143)
HSLhsl(147, 43%, 58%)
HSVhsv(147, 47%, 76%)
CMYKcmyk(47%, 0%, 26%, 24%)
OKLCHoklch(74.3% 0.116 157.6)
LABlab(71.76% -37.58 16.91)
LCHlch(71.76% 41.21 155.78)

What #66C28F 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 #66C28F, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Aquamarine#66CDAAΔE 9.84Forest Green (Crayola)#5FA777ΔE 10.64Shiny Shamrock#5FA778ΔE 10.68Mountain Meadow#30BA8FΔE 10.75Medium Sea Green#3CB371ΔE 12.63Green (Crayola)#1CAC78ΔE 13.18

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

#66C28F Channel Values

How #66C28F 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 194 · B 1438-bit channels as sent to the display
HSLH 147° · S 43% · L 58%Easiest model for building lighter and darker variants
HSVH 147° · S 47% · V 76%Matches the picker in most design tools
CMYKC 47% · M 0% · Y 26% · K 24%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.17:1 vs white · 9.68:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66C28F 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 text2.17:1AA normal AA large AAA normal
TextBlack text9.68:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66C28F in the contrast checker.

Colors That Go With #66C28F

Pairings derived from color-wheel relationships. The complementary color sits opposite #66C28F; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66C28F
Complementary
#C26699
Analogous
#6AC266
Analogous
#66C2BD
Triadic
#8F66C2
Triadic
#C28F66
Split comp.
#BD66C2
Split comp.
#C2666A

Tints & Shades of #66C28F

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

#7CCB9F
#8ED2AD
#A4DBBD
#BAE3CC
#D0ECDC
#E2F3EA

Shades

#49B67A
#3F9D69
#338055
#276242
#1C452E
#112C1D

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66C28F.

How #66C28F 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#66C28F
Protanopia#B6B68F
Protanomaly#9DBB8F
Deuteranopia#ABAB92
Deuteranomaly#94B491
Tritanopia#71BDBD
Tritanomaly#6DBFAC
Achromatopsia#B0B0B0

Test a full palette in the color blindness simulator.

Using #66C28F in Code

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

CSS custom property--color-66c28f: #66C28F;
CSS backgroundbackground-color: #66C28F;
Tailwind configcolors: { 'color-66c28f': '#66C28F' }
SwiftUIColor(red: 0.400, green: 0.761, blue: 0.561)
Android XML<color name="color_66c28f">#66C28F</color>
SVG fillfill="#66C28F"

More Green Colors

#66C28F sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66C28F Frequently Asked Questions

What color is #66C28F?

#66C28F is a mid-tone green — rgb(102, 194, 143) in RGB and hsl(147, 43%, 58%) in HSL. It carries no registered color name of its own; the closest named color is Medium Aquamarine (#66CDAA), which is clearly related but distinguishable side by side at a CIE76 distance of 9.84.

What is the RGB value of #66C28F?

#66C28F is rgb(102, 194, 143) — red 102, green 194, and blue 143 on the 0-255 scale.

What is the CMYK value of #66C28F?

#66C28F converts to approximately cmyk(47%, 0%, 26%, 24%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66C28F be black or white?

Black text is the more readable choice. #66C28F scores 2.17:1 against white and 9.68:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66C28F as a CSS color keyword?

No. #66C28F 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 mediumaquamarine (#66CDAA) at a CIE76 distance of 9.84, which is clearly related but distinguishable side by side.

Open #66C28F 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.