#66B9CC Color

#66B9CC is rgb(102, 185, 204) in RGB, hsl(191, 50%, 60%) in HSL, and about cmyk(50%, 9%, 0%, 20%) in CMYK. It has no registered color name of its own — the closest is Moonstone (#3AA8C1), clearly related but distinguishable side by side at ΔE 8.96. Black text is the more readable choice on this background.

#66B9CC

HEX#66B9CC

RGBrgb(102, 185, 204)

HSLhsl(191, 50%, 60%)

HSVhsv(191, 50%, 80%)

CMYKcmyk(50%, 9%, 0%, 20%)

OKLCHoklch(74% 0.085 214.3)

LABlab(70.45% -22.49 -17.92)

LCHlch(70.45% 28.75 218.55)

What #66B9CC 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 #66B9CC, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Moonstone#3AA8C1ΔE 8.96 Middle Blue#7ED4E6ΔE 9.6 Maximum Blue#47ABCCΔE 9.69 Moonstone Blue#73A9C2ΔE 9.96 Sky Blue#87CEEBΔE 10.49 Dark Sky Blue#8CBED6ΔE 10.51

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

#66B9CC Channel Values

How #66B9CC breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 102 · G 185 · B 204	8-bit channels as sent to the display
HSL	H 191° · S 50% · L 60%	Easiest model for building lighter and darker variants
HSV	H 191° · S 50% · V 80%	Matches the picker in most design tools
CMYK	C 50% · M 9% · Y 0% · K 20%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	2.24:1 vs white · 9.38:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66B9CC 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 text2.24:1AA normal AA large AAA normal

TextBlack text9.38:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66B9CC in the contrast checker.

Colors That Go With #66B9CC

Pairings derived from color-wheel relationships. The complementary color sits opposite #66B9CC; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #66B9CC

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

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66B9CC.

How #66B9CC 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#66B9CC

Protanopia#AEAECC

Protanomaly#97B3CC

Deuteranopia#A3A3CD

Deuteranomaly#8FADCD

Tritanopia#60BCBC

Tritanomaly#63BBC2

Achromatopsia#ADADAD

Test a full palette in the color blindness simulator.

Using #66B9CC in Code

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

CSS custom property--color-66b9cc: #66B9CC;

CSS backgroundbackground-color: #66B9CC;

Tailwind configcolors: { 'color-66b9cc': '#66B9CC' }

SwiftUIColor(red: 0.400, green: 0.725, blue: 0.800)

Android XML<color name="color_66b9cc">#66B9CC</color>

SVG fillfill="#66B9CC"

More Teal Colors

#66B9CC sits in the teal family. These are its neighbours across that family's full range, each with its own breakdown.

002424 f5ffff 002a38 f0ffff 002d2e eefbfb 003333 ecfeff 003542 ecf7f9 003838 ebffff 006466 009999 00ebeb 0d1616 192929 24fbff 36747d 50bfe6 73a9c2 8dd9cc aec6cf ccffff

#66B9CC Frequently Asked Questions

What color is #66B9CC?

#66B9CC is a light teal — rgb(102, 185, 204) in RGB and hsl(191, 50%, 60%) in HSL. It carries no registered color name of its own; the closest named color is Moonstone (#3AA8C1), which is clearly related but distinguishable side by side at a CIE76 distance of 8.96.

What is the RGB value of #66B9CC?

#66B9CC is rgb(102, 185, 204) — red 102, green 185, and blue 204 on the 0-255 scale.

What is the CMYK value of #66B9CC?

#66B9CC converts to approximately cmyk(50%, 9%, 0%, 20%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66B9CC be black or white?

Black text is the more readable choice. #66B9CC scores 2.24:1 against white and 9.38:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66B9CC as a CSS color keyword?

No. #66B9CC 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 skyblue (#87CEEB) at a CIE76 distance of 10.49, which is visibly different.

Open #66B9CC in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every teal in the color library, the guide to shades of teal, or the full color library.