#555666

Color #555666

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 10.92 Nearest Tailwind class zinc-600 #52525c · ΔE 3.2

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Conversions

HEX

#555666

RGB

rgb(85, 86, 102)

HSL

hsl(236.5, 9.1%, 36.7%)

HSV / HSB

hsv(236.5, 16.7%, 40%)

CMYK

cmyk(16.7%, 15.7%, 0%, 60%)

LAB

lab(37.02, 3.3, -9.33)

LCH

lch(37.02, 9.9, 289.48)

OKLCH

oklch(45.8%, 0.0259, 282.48)

HWB

hwb(236.5, 33.3%, 60%)

Harmony colors

Complementary

#666555

Analogous

#555f66

#555666

#5d5566

Triadic

#555666

#665556

#566655

Split-complementary

#555666

#665d55

#5f6655

Tetradic

#555666

#655566

#666555

#566655

Square

#555666

#66555f

#666555

#55665d

Shades

Color #555666 mixed toward black.

#474855

#393944

#2b2b33

#1c1d22

#0e0e11

Tints

Color #555666 mixed toward white.

#6e6f83

#8a8b9d

#a7a8b6

#c4c5ce

#e2e2e7

Tones

Color #555666 mixed toward gray.

#565765

#585963

#595a62

#5b5b60

#5c5c5f

Accessibility

Aa White text on this color

7.22:1

Aa Black text on this color

2.91:1

White text reads better on this background (7.22:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#555562 · ΔE 1.4

Deuteranopia

#555562 · ΔE 1.4

Tritanopia

#555f5f · ΔE 11.3

Achromatopsia

#575757 · ΔE 8.5

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

Code

CSS

background-color: #555666;

Tailwind (arbitrary value)

bg-[#555666]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#555666 (#555666) is rgb(85, 86, 102) in RGB.

No, #555666 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 #555666, or check how it holds up for accessibility.

Generate a palette → Check contrast