#66acb5

Color #66acb5

A muted medium cyan.

Closest named color Cadet Blue #5f9ea0 · ΔE 6.55 Nearest Tailwind class cyan-500 #00b8db · ΔE 8.8

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#66acb5

RGB

rgb(102, 172, 181)

HSL

hsl(186.8, 34.8%, 55.5%)

HSV / HSB

hsv(186.8, 43.6%, 71%)

CMYK

cmyk(43.6%, 5%, 0%, 29%)

LAB

lab(66.26, -19.65, -11.52)

LCH

lch(66.26, 22.78, 210.38)

OKLCH

oklch(70.2%, 0.0718, 206.21)

HWB

hwb(186.8, 40%, 29%)

Harmony colors

Complementary

#b56f66

Analogous

#66b596

#66acb5

#6685b5

Triadic

#66acb5

#b566ac

#acb566

Split-complementary

#66acb5

#b56685

#b59666

Tetradic

#66acb5

#6f66b5

#b56f66

#acb566

Square

#66acb5

#9666b5

#b56f66

#85b566

Shades

Color #66acb5 mixed toward black.

#4d969f

#3e787f

#2e5a5f

#1f3c40

#0f1e20

Tints

Color #66acb5 mixed toward white.

#80bac1

#99c8ce

#b3d6da

#cce3e6

#e6f1f3

Tones

Color #66acb5 mixed toward gray.

#6da7ae

#73a2a8

#7a9da1

#80989b

#879394

Accessibility

Aa White text on this color

2.58:1

Aa Black text on this color

8.13:1

Black text reads better on this background (8.13:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#8a8bb3 · ΔE 24.6

Deuteranopia

#8680b2 · ΔE 26.9

Tritanopia

#6bb1b1 · ΔE 4

Achromatopsia

#a1a1a1 · ΔE 18.3

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #66acb5;

Tailwind (arbitrary value)

bg-[#66acb5]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#66acb5 (#66acb5) is rgb(102, 172, 181) in RGB.

No, #66acb5 is not web-safe. The nearest web-safe colors are among its tones and shades below.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

Try it → Generators

Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

Try it →

Build something with this color

Generate a full palette from #66acb5, or check how it holds up for accessibility.

Generate a palette → Check contrast