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#66CCB3 Color

#66CCB3 is rgb(102, 204, 179) in RGB, hsl(165, 50%, 60%) in HSL, and about cmyk(50%, 0%, 12%, 20%) 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 5.34. Black text is the more readable choice on this background.

#66CCB3
HEX#66CCB3
RGBrgb(102, 204, 179)
HSLhsl(165, 50%, 60%)
HSVhsv(165, 50%, 80%)
CMYKcmyk(50%, 0%, 12%, 20%)
OKLCHoklch(77.7% 0.103 175.4)
LABlab(75.44% -35.77 2.88)
LCHlch(75.44% 35.89 175.40)

What #66CCB3 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 #66CCB3, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Aquamarine#66CDAAΔE 5.34Pearl Aqua#88D8C0ΔE 8.07Keppel#3AB09EΔE 11.13Middle Blue Green#8DD9CCΔE 11.71Medium Turquoise#48D1CCΔE 12.3Zeal#91E0B7ΔE 12.68

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

#66CCB3 Channel Values

How #66CCB3 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 204 · B 1798-bit channels as sent to the display
HSLH 165° · S 50% · L 60%Easiest model for building lighter and darker variants
HSVH 165° · S 50% · V 80%Matches the picker in most design tools
CMYKC 50% · M 0% · Y 12% · K 20%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.93:1 vs white · 10.85:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66CCB3 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 text1.93:1AA normal AA large AAA normal
TextBlack text10.85:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66CCB3 in the contrast checker.

Colors That Go With #66CCB3

Pairings derived from color-wheel relationships. The complementary color sits opposite #66CCB3; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66CCB3
Complementary
#CC667F
Analogous
#66CC80
Analogous
#66B3CC
Triadic
#B366CC
Triadic
#CCB366
Split comp.
#CC66B2
Split comp.
#CC7F66

Tints & Shades of #66CCB3

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

#79D2BC
#90DAC8
#A3E0D1
#BAE8DD
#CDEEE6
#E4F6F2

Shades

#47C2A3
#38A88C
#2E8A73
#246B59
#194D40
#0F2E26

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66CCB3.

How #66CCB3 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#66CCB3
Protanopia#BFBFB3
Protanomaly#A3C5B3
Deuteranopia#B3B3B5
Deuteranomaly#9ABDB4
Tritanopia#6DC9C9
Tritanomaly#6ACAC1
Achromatopsia#BABABA

Test a full palette in the color blindness simulator.

Using #66CCB3 in Code

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

CSS custom property--color-66ccb3: #66CCB3;
CSS backgroundbackground-color: #66CCB3;
Tailwind configcolors: { 'color-66ccb3': '#66CCB3' }
SwiftUIColor(red: 0.400, green: 0.800, blue: 0.702)
Android XML<color name="color_66ccb3">#66CCB3</color>
SVG fillfill="#66CCB3"

More Green Colors

#66CCB3 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66CCB3 Frequently Asked Questions

What color is #66CCB3?

#66CCB3 is a light green — rgb(102, 204, 179) in RGB and hsl(165, 50%, 60%) 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 5.34.

What is the RGB value of #66CCB3?

#66CCB3 is rgb(102, 204, 179) — red 102, green 204, and blue 179 on the 0-255 scale.

What is the CMYK value of #66CCB3?

#66CCB3 converts to approximately cmyk(50%, 0%, 12%, 20%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66CCB3 be black or white?

Black text is the more readable choice. #66CCB3 scores 1.93:1 against white and 10.85:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66CCB3 as a CSS color keyword?

No. #66CCB3 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 5.34, which is clearly related but distinguishable side by side.

Open #66CCB3 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.