#3f414b

Color #3f414b

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 5.15 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 1.8

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

Conversions

HEX

#3f414b

RGB

rgb(63, 65, 75)

HSL

hsl(230, 8.7%, 27.1%)

HSV / HSB

hsv(230, 16%, 29.4%)

CMYK

cmyk(16%, 13.3%, 0%, 70.6%)

LAB

lab(27.7, 1.59, -6.33)

LCH

lch(27.7, 6.53, 284.1)

OKLCH

oklch(37.7%, 0.0172, 276.67)

HWB

hwb(230, 24.7%, 70.6%)

Harmony colors

Complementary

#4b493f

Analogous

#3f474b

#3f414b

#433f4b

Triadic

#3f414b

#4b3f41

#414b3f

Split-complementary

#3f414b

#4b433f

#474b3f

Tetradic

#3f414b

#493f4b

#4b493f

#414b3f

Square

#3f414b

#4b3f47

#4b493f

#3f4b43

Shades

Color #3f414b mixed toward black.

#35363f

#2a2b32

#202126

#151619

#0b0b0d

Tints

Color #3f414b mixed toward white.

#5b5e6d

#787c8e

#9a9daa

#bcbdc6

#dddee3

Tones

Color #3f414b mixed toward gray.

#40424a

#414249

#424348

#434447

#444446

Accessibility

Aa White text on this color

10.15:1

Aa Black text on this color

2.07:1

White text reads better on this background (10.15:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#404049 · ΔE 1.1

Deuteranopia

#404048 · ΔE 1.4

Tritanopia

#3f4746 · ΔE 8.5

Achromatopsia

#414141 · ΔE 5.9

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

Code

CSS

background-color: #3f414b;

Tailwind (arbitrary value)

bg-[#3f414b]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#3f414b (#3f414b) is rgb(63, 65, 75) in RGB.

No, #3f414b 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 #3f414b, or check how it holds up for accessibility.

Generate a palette → Check contrast