#666f7f

Color #666f7f

A nearly neutral, gray-leaning medium blue.

Closest named color Slate Gray #708090 · ΔE 6.71 Nearest Tailwind class gray-500 #6a7282 · ΔE 1.3

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

Conversions

HEX

#666f7f

RGB

rgb(102, 111, 127)

HSL

hsl(218.4, 10.9%, 44.9%)

HSV / HSB

hsv(218.4, 19.7%, 49.8%)

CMYK

cmyk(19.7%, 12.6%, 0%, 50.2%)

LAB

lab(46.61, 0.28, -9.97)

LCH

lch(46.61, 9.97, 271.61)

OKLCH

oklch(54%, 0.0274, 262.02)

HWB

hwb(218.4, 40%, 50.2%)

Harmony colors

Complementary

#7f7666

Analogous

#667b7f

#666f7f

#6a667f

Triadic

#666f7f

#7f666f

#6f7f66

Split-complementary

#666f7f

#7f6a66

#7b7f66

Tetradic

#666f7f

#76667f

#7f7666

#6f7f66

Square

#666f7f

#7f667b

#7f7666

#667f6a

Shades

Color #666f7f mixed toward black.

#555d6a

#444a55

#33383f

#22252a

#111315

Tints

Color #666f7f mixed toward white.

#7d8697

#979eac

#b1b7c0

#cbcfd5

#e5e7ea

Tones

Color #666f7f mixed toward gray.

#68707d

#6a707b

#6c7179

#6e7177

#707275

Accessibility

Aa White text on this color

5.07:1

Aa Black text on this color

4.15:1

White text reads better on this background (5.07:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#6a6a7b · ΔE 4.9

Deuteranopia

#69697a · ΔE 5

Tritanopia

#667878 · ΔE 10.7

Achromatopsia

#6e6e6e · ΔE 8.2

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

Code

CSS

background-color: #666f7f;

Tailwind (arbitrary value)

bg-[#666f7f]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#666f7f (#666f7f) is rgb(102, 111, 127) in RGB.

No, #666f7f 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.

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 #666f7f, or check how it holds up for accessibility.

Generate a palette → Check contrast