#3f454b

Color #3f454b

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 4.22 Nearest Tailwind class mist-700 #394447 · ΔE 3.7

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

Conversions

HEX

#3f454b

RGB

rgb(63, 69, 75)

HSL

hsl(210, 8.7%, 27.1%)

HSV / HSB

hsv(210, 16%, 29.4%)

CMYK

cmyk(16%, 8%, 0%, 70.6%)

LAB

lab(28.96, -1, -4.44)

LCH

lch(28.96, 4.55, 257.31)

OKLCH

oklch(38.7%, 0.0129, 248.2)

HWB

hwb(210, 24.7%, 70.6%)

Harmony colors

Complementary

#4b453f

Analogous

#3f4b4b

#3f454b

#3f3f4b

Triadic

#3f454b

#4b3f45

#454b3f

Split-complementary

#3f454b

#4b3f3f

#4b4b3f

Tetradic

#3f454b

#453f4b

#4b453f

#454b3f

Square

#3f454b

#4b3f4b

#4b453f

#3f4b3f

Shades

Color #3f454b mixed toward black.

#353a3f

#2a2e32

#202326

#151719

#0b0c0d

Tints

Color #3f454b mixed toward white.

#5b646d

#78838e

#9aa2aa

#bcc1c6

#dde0e3

Tones

Color #3f454b mixed toward gray.

#40454a

#414549

#424548

#434547

#444546

Accessibility

Aa White text on this color

9.7:1

Aa Black text on this color

2.16:1

White text reads better on this background (9.7:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#42424a · ΔE 4.1

Deuteranopia

#414149 · ΔE 4.2

Tritanopia

#3f4848 · ΔE 4.6

Achromatopsia

#444444 · ΔE 4.2

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

Code

CSS

background-color: #3f454b;

Tailwind (arbitrary value)

bg-[#3f454b]

Related colors

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Steel Blue #4682b4

Light Steel Blue #b0c4de

Frequently asked questions

#3f454b (#3f454b) is rgb(63, 69, 75) in RGB.

No, #3f454b 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 #3f454b, or check how it holds up for accessibility.

Generate a palette → Check contrast