#66636f

Color #66636f

A nearly neutral, gray-leaning medium blue.

Closest named color Dim Gray #696969 · ΔE 7.57 Nearest Tailwind class zinc-500 #71717b · ΔE 5.5

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Conversions

HEX

#66636f

RGB

rgb(102, 99, 111)

HSL

hsl(255, 5.7%, 41.2%)

HSV / HSB

hsv(255, 10.8%, 43.5%)

CMYK

cmyk(8.1%, 10.8%, 0%, 56.5%)

LAB

lab(42.61, 3.74, -6.33)

LCH

lch(42.61, 7.35, 300.58)

OKLCH

oklch(50.7%, 0.0191, 297.1)

HWB

hwb(255, 38.8%, 56.5%)

Harmony colors

Complementary

#6c6f63

Analogous

#63666f

#66636f

#6c636f

Triadic

#66636f

#6f6663

#636f66

Split-complementary

#66636f

#6f6c63

#666f63

Tetradic

#66636f

#6f636c

#6c6f63

#636f66

Square

#66636f

#6f6366

#6c6f63

#636f6c

Shades

Color #66636f mixed toward black.

#55535d

#44424a

#333238

#222125

#111113

Tints

Color #66636f mixed toward white.

#7e7b89

#9895a1

#b2b0b8

#cccad0

#e5e5e7

Tones

Color #66636f mixed toward gray.

#67646e

#67656d

#68666c

#68676b

#69686a

Accessibility

Aa White text on this color

5.87:1

Aa Black text on this color

3.58:1

White text reads better on this background (5.87:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#65656c · ΔE 3.3

Deuteranopia

#65656c · ΔE 3.3

Tritanopia

#666a6a · ΔE 8.7

Achromatopsia

#656565 · ΔE 7.1

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

Code

CSS

background-color: #66636f;

Tailwind (arbitrary value)

bg-[#66636f]

Related colors

Medium Purple #9370db

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#66636f (#66636f) is rgb(102, 99, 111) in RGB.

No, #66636f 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.

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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 #66636f, or check how it holds up for accessibility.

Generate a palette → Check contrast