#3f555c

Color #3f555c

A muted dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 6.96 Nearest Tailwind class mist-600 #4b585b · ΔE 3.6

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Conversions

HEX

#3f555c

RGB

rgb(63, 85, 92)

HSL

hsl(194.5, 18.7%, 30.4%)

HSV / HSB

hsv(194.5, 31.5%, 36.1%)

CMYK

cmyk(31.5%, 7.6%, 0%, 63.9%)

LAB

lab(34.65, -6.48, -6.79)

LCH

lch(34.65, 9.39, 226.34)

OKLCH

oklch(43.4%, 0.0292, 219.3)

HWB

hwb(194.5, 24.7%, 63.9%)

Harmony colors

Complementary

#5c463f

Analogous

#3f5c55

#3f555c

#3f475c

Triadic

#3f555c

#5c3f55

#555c3f

Split-complementary

#3f555c

#5c3f47

#5c553f

Tetradic

#3f555c

#463f5c

#5c463f

#555c3f

Square

#3f555c

#553f5c

#5c463f

#475c3f

Shades

Color #3f555c mixed toward black.

#35474d

#2a393d

#202b2e

#151c1f

#0b0e0f

Tints

Color #3f555c mixed toward white.

#57757f

#73949f

#96afb7

#b9cacf

#dce4e7

Tones

Color #3f555c mixed toward gray.

#41545a

#445357

#465155

#495052

#4b4f50

Accessibility

Aa White text on this color

7.88:1

Aa Black text on this color

2.67:1

White text reads better on this background (7.88:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#494a5a · ΔE 12.7

Deuteranopia

#48465a · ΔE 15.5

Tritanopia

#405959 · ΔE 4.6

Achromatopsia

#515151 · ΔE 9.4

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

Code

CSS

background-color: #3f555c;

Tailwind (arbitrary value)

bg-[#3f555c]

Related colors

Light Blue #add8e6

Deep Sky Blue #00bfff

Sky Blue #87ceeb

Powder Blue #b0e0e6

Light Sky Blue #87cefa

Charcoal #36454f

Frequently asked questions

#3f555c (#3f555c) is rgb(63, 85, 92) in RGB.

No, #3f555c 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 #3f555c, or check how it holds up for accessibility.

Generate a palette → Check contrast