#666688

Color #666688

A nearly neutral, gray-leaning medium blue.

Closest named color Slate Gray #708090 · ΔE 15.51 Nearest Tailwind class mauve-500 #79697b · ΔE 8.7

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Conversions

HEX

#666688

RGB

rgb(102, 102, 136)

HSL

hsl(240, 14.3%, 46.7%)

HSV / HSB

hsv(240, 25%, 53.3%)

CMYK

cmyk(25%, 25%, 0%, 46.7%)

LAB

lab(44.38, 7.96, -18.75)

LCH

lch(44.38, 20.37, 293)

OKLCH

oklch(52.3%, 0.0533, 284.45)

HWB

hwb(240, 40%, 46.7%)

Harmony colors

Complementary

#888866

Analogous

#667788

#666688

#776688

Triadic

#666688

#886666

#668866

Split-complementary

#666688

#887766

#778866

Tetradic

#666688

#886688

#888866

#668866

Square

#666688

#886677

#888866

#668877

Shades

Color #666688 mixed toward black.

#555571

#44445b

#333344

#22222d

#111117

Tints

Color #666688 mixed toward white.

#7e7e9e

#9797b1

#b1b1c5

#cbcbd8

#e5e5ec

Tones

Color #666688 mixed toward gray.

#696985

#6c6c82

#6f6f80

#71717d

#74747a

Accessibility

Aa White text on this color

5.5:1

Aa Black text on this color

3.82:1

White text reads better on this background (5.5:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#666681 · ΔE 2.4

Deuteranopia

#66667f · ΔE 3.1

Tritanopia

#667b79 · ΔE 20.8

Achromatopsia

#696969 · ΔE 14.8

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

Code

CSS

background-color: #666688;

Tailwind (arbitrary value)

bg-[#666688]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#666688 (#666688) is rgb(102, 102, 136) in RGB.

No, #666688 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 #666688, or check how it holds up for accessibility.

Generate a palette → Check contrast