#666378

Color #666378

A nearly neutral, gray-leaning medium blue.

Closest named color Slate Gray #708090 · ΔE 12.74 Nearest Tailwind class mauve-500 #79697b · ΔE 6.4

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Conversions

HEX

#666378

RGB

rgb(102, 99, 120)

HSL

hsl(248.6, 9.6%, 42.9%)

HSV / HSB

hsv(248.6, 17.5%, 47.1%)

CMYK

cmyk(15%, 17.5%, 0%, 52.9%)

LAB

lab(42.92, 5.82, -11.33)

LCH

lch(42.92, 12.74, 297.19)

OKLCH

oklch(51%, 0.0331, 291.83)

HWB

hwb(248.6, 38.8%, 52.9%)

Harmony colors

Complementary

#757863

Analogous

#636a78

#666378

#706378

Triadic

#666378

#786663

#637866

Split-complementary

#666378

#787063

#6a7863

Tetradic

#666378

#786375

#757863

#637866

Square

#666378

#78636a

#757863

#637870

Shades

Color #666378 mixed toward black.

#555264

#444250

#33313c

#222128

#111014

Tints

Color #666378 mixed toward white.

#7d7a91

#9795a7

#b1afbd

#cbcad3

#e5e4e9

Tones

Color #666378 mixed toward gray.

#676576

#686674

#6a6873

#6b6a71

#6c6c6f

Accessibility

Aa White text on this color

5.8:1

Aa Black text on this color

3.62:1

White text reads better on this background (5.8:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#656573 · ΔE 3.6

Deuteranopia

#656572 · ΔE 4

Tritanopia

#66706f · ΔE 14.6

Achromatopsia

#656565 · ΔE 10.8

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

Code

CSS

background-color: #666378;

Tailwind (arbitrary value)

bg-[#666378]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#666378 (#666378) is rgb(102, 99, 120) in RGB.

No, #666378 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.

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Build something with this color

Generate a full palette from #666378, or check how it holds up for accessibility.

Generate a palette → Check contrast