#3f5355

Color #3f5355

A nearly neutral, gray-leaning dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 5.22 Nearest Tailwind class mist-600 #4b585b · ΔE 3.8

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

Conversions

HEX

#3f5355

RGB

rgb(63, 83, 85)

HSL

hsl(185.5, 14.9%, 29%)

HSV / HSB

hsv(185.5, 25.9%, 33.3%)

CMYK

cmyk(25.9%, 2.4%, 0%, 66.7%)

LAB

lab(33.77, -7.14, -3.69)

LCH

lch(33.77, 8.04, 207.33)

OKLCH

oklch(42.6%, 0.0248, 203.99)

HWB

hwb(185.5, 24.7%, 66.7%)

Harmony colors

Complementary

#55413f

Analogous

#3f554c

#3f5355

#3f4855

Triadic

#3f5355

#553f53

#53553f

Split-complementary

#3f5355

#553f48

#554c3f

Tetradic

#3f5355

#413f55

#55413f

#53553f

Square

#3f5355

#4c3f55

#55413f

#48553f

Shades

Color #3f5355 mixed toward black.

#344547

#2a3739

#1f292a

#151c1c

#0a0e0e

Tints

Color #3f5355 mixed toward white.

#597578

#749598

#97afb2

#bacacc

#dce4e5

Tones

Color #3f5355 mixed toward gray.

#415153

#435051

#444e4f

#464d4e

#484b4c

Accessibility

Aa White text on this color

8.14:1

Aa Black text on this color

2.58:1

White text reads better on this background (8.14:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#484955 · ΔE 12.3

Deuteranopia

#474654 · ΔE 14.1

Tritanopia

#405454 · ΔE 1.2

Achromatopsia

#4f4f4f · ΔE 9

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

Code

CSS

background-color: #3f5355;

Tailwind (arbitrary value)

bg-[#3f5355]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#3f5355 (#3f5355) is rgb(63, 83, 85) in RGB.

No, #3f5355 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.

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 #3f5355, or check how it holds up for accessibility.

Generate a palette → Check contrast