#66CCFF Color

#66CCFF is rgb(102, 204, 255) in RGB, hsl(200, 100%, 70%) in HSL, and about cmyk(60%, 20%, 0%, 0%) in CMYK. It has no registered color name of its own — the closest is Maya Blue (#73C2FB), clearly related but distinguishable side by side at ΔE 7.19. Black text is the more readable choice on this background.

#66CCFF

HEX#66CCFF

RGBrgb(102, 204, 255)

HSLhsl(200, 100%, 70%)

HSVhsv(200, 60%, 100%)

CMYKcmyk(60%, 20%, 0%, 0%)

OKLCHoklch(80.4% 0.119 232.7)

LABlab(77.46% -19.81 -34.69)

LCHlch(77.46% 39.94 240.27)

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

Maya Blue#73C2FBΔE 7.19 Light Sky Blue#87CEFAΔE 7.97 Blizzard Blue#50BFE6ΔE 8.44 Pale Cyan#87D3F8ΔE 9.57 Picton Blue#45B1E8ΔE 10.06 Vivid Sky Blue#00CCFFΔE 10.72

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

#66CCFF Channel Values

How #66CCFF 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 204 · B 255	8-bit channels as sent to the display
HSL	H 200° · S 100% · L 70%	Easiest model for building lighter and darker variants
HSV	H 200° · S 60% · V 100%	Matches the picker in most design tools
CMYK	C 60% · M 20% · Y 0% · K 0%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	1.8:1 vs white · 11.65:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66CCFF 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 text1.8:1AA normal AA large AAA normal

TextBlack text11.65:1AA normal AA large AAA normal

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

Colors That Go With #66CCFF

Pairings derived from color-wheel relationships. The complementary color sits opposite #66CCFF; 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 #66CCFF

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 #66CCFF.

How #66CCFF 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#66CCFF

Protanopia#BFBFFF

Protanomaly#A3C5FF

Deuteranopia#B3B3FF

Deuteranomaly#9ABDFF

Tritanopia#51D3D3

Tritanomaly#5AD0E6

Achromatopsia#C1C1C1

Test a full palette in the color blindness simulator.

Using #66CCFF in Code

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

CSS custom property--color-66ccff: #66CCFF;

CSS backgroundbackground-color: #66CCFF;

Tailwind configcolors: { 'color-66ccff': '#66CCFF' }

SwiftUIColor(red: 0.400, green: 0.800, blue: 1.000)

Android XML<color name="color_66ccff">#66CCFF</color>

SVG fillfill="#66CCFF"

More Blue Colors

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

6a5acd 66b8ff 6a7282 6699ff 6b6bff 6699cc 6b7c93 6666ff 6ca0dc 6666cc 6d9bc3 666699 8395a7 9e9eff c1cef5 dedcef 00002e 002395 0099ff 101047 1d2951 2b2bc5 374049 4f39f6

#66CCFF Frequently Asked Questions

What color is #66CCFF?

#66CCFF is a light blue — rgb(102, 204, 255) in RGB and hsl(200, 100%, 70%) in HSL. It carries no registered color name of its own; the closest named color is Maya Blue (#73C2FB), which is clearly related but distinguishable side by side at a CIE76 distance of 7.19.

What is the RGB value of #66CCFF?

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

What is the CMYK value of #66CCFF?

#66CCFF converts to approximately cmyk(60%, 20%, 0%, 0%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66CCFF be black or white?

Black text is the more readable choice. #66CCFF scores 1.8:1 against white and 11.65:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

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

No. #66CCFF 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 lightskyblue (#87CEFA) at a CIE76 distance of 7.97, which is clearly related but distinguishable side by side.

Open #66CCFF 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 blue in the color library, the guide to shades of blue, or the full color library.