#666c72

Color #666c72

A nearly neutral, gray-leaning medium blue.

Closest named color Dim Gray #696969 · ΔE 4.34 Nearest Tailwind class neutral-500 #737373 · ΔE 5

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Conversions

HEX

#666c72

RGB

rgb(102, 108, 114)

HSL

hsl(210, 5.6%, 42.4%)

HSV / HSB

hsv(210, 10.5%, 44.7%)

CMYK

cmyk(10.5%, 5.3%, 0%, 55.3%)

LAB

lab(45.31, -0.97, -4.13)

LCH

lch(45.31, 4.24, 256.78)

OKLCH

oklch(52.8%, 0.012, 247.93)

HWB

hwb(210, 40%, 55.3%)

Harmony colors

Complementary

#726c66

Analogous

#667272

#666c72

#666672

Triadic

#666c72

#72666c

#6c7266

Split-complementary

#666c72

#726666

#727266

Tetradic

#666c72

#6c6672

#726c66

#6c7266

Square

#666c72

#726672

#726c66

#667266

Shades

Color #666c72 mixed toward black.

#555a5f

#44484c

#333639

#222426

#111213

Tints

Color #666c72 mixed toward white.

#7e858b

#989da3

#b1b6ba

#cbced1

#e5e7e8

Tones

Color #666c72 mixed toward gray.

#676c71

#686c70

#696c6f

#6a6c6e

#6b6c6d

Accessibility

Aa White text on this color

5.31:1

Aa Black text on this color

3.95:1

White text reads better on this background (5.31:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#696971 · ΔE 3.9

Deuteranopia

#686870 · ΔE 4

Tritanopia

#666f6f · ΔE 4.3

Achromatopsia

#6b6b6b · ΔE 4

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

Code

CSS

background-color: #666c72;

Tailwind (arbitrary value)

bg-[#666c72]

Related colors

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Steel Blue #4682b4

Light Steel Blue #b0c4de

Frequently asked questions

#666c72 (#666c72) is rgb(102, 108, 114) in RGB.

No, #666c72 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 #666c72, or check how it holds up for accessibility.

Generate a palette → Check contrast