#666f66

Color #666f66

A nearly neutral, gray-leaning medium green.

Closest named color Dim Gray #696969 · ΔE 6.69 Nearest Tailwind class neutral-500 #737373 · ΔE 7.8

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

Conversions

HEX

#666f66

RGB

rgb(102, 111, 102)

HSL

hsl(120, 4.2%, 41.8%)

HSV / HSB

hsv(120, 8.1%, 43.5%)

CMYK

cmyk(8.1%, 0%, 8.1%, 56.5%)

LAB

lab(45.84, -5.29, 3.84)

LCH

lch(45.84, 6.54, 144.02)

OKLCH

oklch(53.1%, 0.0176, 145.41)

HWB

hwb(120, 40%, 56.5%)

Harmony colors

Complementary

#6f666f

Analogous

#6b6f66

#666f66

#666f6b

Triadic

#666f66

#66666f

#6f6666

Split-complementary

#666f66

#6b666f

#6f666b

Tetradic

#666f66

#666f6f

#6f666f

#6f6666

Square

#666f66

#666b6f

#6f666f

#6f6b66

Shades

Color #666f66 mixed toward black.

#555d55

#444a44

#333833

#222522

#111311

Tints

Color #666f66 mixed toward white.

#7e897e

#98a098

#b2b8b2

#cbd0cb

#e5e7e5

Tones

Color #666f66 mixed toward gray.

#676e67

#686e68

#686d68

#696c69

#6a6b6a

Accessibility

Aa White text on this color

5.21:1

Aa Black text on this color

4.03:1

White text reads better on this background (5.21:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#6a6a68 · ΔE 6.5

Deuteranopia

#696969 · ΔE 7.5

Tritanopia

#666a6a · ΔE 6

Achromatopsia

#6d6d6d · ΔE 7.4

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

Code

CSS

background-color: #666f66;

Tailwind (arbitrary value)

bg-[#666f66]

Related colors

Forest Green #228b22

Mint Green #98ff98

Dark Green #006400

Dark Sea Green #8fbc8f

Green #008000

Honeydew #f0fff0

Frequently asked questions

#666f66 (#666f66) is rgb(102, 111, 102) in RGB.

No, #666f66 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.

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 #666f66, or check how it holds up for accessibility.

Generate a palette → Check contrast