#66647c

Color #66647c

A nearly neutral, gray-leaning medium blue.

Closest named color Slate Gray #708090 · ΔE 12.86 Nearest Tailwind class mauve-500 #79697b · ΔE 6.8

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Conversions

HEX

#66647c

RGB

rgb(102, 100, 124)

HSL

hsl(245, 10.7%, 43.9%)

HSV / HSB

hsv(245, 19.4%, 48.6%)

CMYK

cmyk(17.7%, 19.4%, 0%, 51.4%)

LAB

lab(43.35, 6.17, -13.09)

LCH

lch(43.35, 14.47, 295.24)

OKLCH

oklch(51.4%, 0.0377, 288.87)

HWB

hwb(245, 39.2%, 51.4%)

Harmony colors

Complementary

#7a7c64

Analogous

#646e7c

#66647c

#72647c

Triadic

#66647c

#7c6664

#647c66

Split-complementary

#66647c

#7c7264

#6e7c64

Tetradic

#66647c

#7c647a

#7a7c64

#647c66

Square

#66647c

#7c646e

#7a7c64

#647c72

Shades

Color #66647c mixed toward black.

#555367

#444353

#33323e

#222129

#111115

Tints

Color #66647c mixed toward white.

#7d7b95

#9795aa

#b1b0bf

#cbcad4

#e5e5ea

Tones

Color #66647c mixed toward gray.

#68667a

#696878

#6b6a76

#6d6c74

#6e6e72

Accessibility

Aa White text on this color

5.71:1

Aa Black text on this color

3.68:1

White text reads better on this background (5.71:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#656577 · ΔE 2.8

Deuteranopia

#656575 · ΔE 3.6

Tritanopia

#667271 · ΔE 15.9

Achromatopsia

#666666 · ΔE 11.8

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

Code

CSS

background-color: #66647c;

Tailwind (arbitrary value)

bg-[#66647c]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#66647c (#66647c) is rgb(102, 100, 124) in RGB.

No, #66647c 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 #66647c, or check how it holds up for accessibility.

Generate a palette → Check contrast