#666d6c

Color #666d6c

A nearly neutral, gray-leaning medium cyan.

Closest named color Dim Gray #696969 · ΔE 3.07 Nearest Tailwind class neutral-500 #737373 · ΔE 4.9

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

Conversions

HEX

#666d6c

RGB

rgb(102, 109, 108)

HSL

hsl(171.4, 3.3%, 41.4%)

HSV / HSB

hsv(171.4, 6.4%, 42.7%)

CMYK

cmyk(6.4%, 0%, 0.9%, 57.3%)

LAB

lab(45.42, -2.88, -0.36)

LCH

lch(45.42, 2.9, 187.13)

OKLCH

oklch(52.8%, 0.0087, 186.63)

HWB

hwb(171.4, 40%, 57.3%)

Harmony colors

Complementary

#6d6667

Analogous

#666d69

#666d6c

#666b6d

Triadic

#666d6c

#6c666d

#6d6c66

Split-complementary

#666d6c

#6d666b

#6d6966

Tetradic

#666d6c

#66676d

#6d6667

#6d6c66

Square

#666d6c

#69666d

#6d6667

#6b6d66

Shades

Color #666d6c mixed toward black.

#555b5a

#444948

#333736

#222424

#111212

Tints

Color #666d6c mixed toward white.

#7e8785

#989f9e

#b2b7b6

#cccfce

#e5e7e7

Tones

Color #666d6c mixed toward gray.

#676c6c

#676c6b

#686b6b

#686b6a

#696a6a

Accessibility

Aa White text on this color

5.29:1

Aa Black text on this color

3.97:1

White text reads better on this background (5.29:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#69696c · ΔE 5.1

Deuteranopia

#69686c · ΔE 6

Tritanopia

#666c6c · ΔE 0.9

Achromatopsia

#6b6b6b · ΔE 4

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

Code

CSS

background-color: #666d6c;

Tailwind (arbitrary value)

bg-[#666d6c]

Related colors

Turquoise #40e0d0

Light Sea Green #20b2aa

Medium Turquoise #48d1cc

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#666d6c (#666d6c) is rgb(102, 109, 108) in RGB.

No, #666d6c is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

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

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Contrast Checker

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

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Palette Generator

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

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Build something with this color

Generate a full palette from #666d6c, or check how it holds up for accessibility.

Generate a palette → Check contrast