#3f4145

Color #3f4145

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 6.29 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 2.5

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Conversions

HEX

#3f4145

RGB

rgb(63, 65, 69)

HSL

hsl(220, 4.5%, 25.9%)

HSV / HSB

hsv(220, 8.7%, 27.1%)

CMYK

cmyk(8.7%, 5.8%, 0%, 72.9%)

LAB

lab(27.48, 0.1, -2.72)

LCH

lch(27.48, 2.72, 272.11)

OKLCH

oklch(37.5%, 0.0073, 264.52)

HWB

hwb(220, 24.7%, 72.9%)

Harmony colors

Complementary

#45433f

Analogous

#3f4445

#3f4145

#403f45

Triadic

#3f4145

#453f41

#41453f

Split-complementary

#3f4145

#45403f

#44453f

Tetradic

#3f4145

#433f45

#45433f

#41453f

Square

#3f4145

#453f44

#45433f

#3f4540

Shades

Color #3f4145 mixed toward black.

#35363a

#2a2b2e

#202123

#151617

#0b0b0c

Tints

Color #3f4145 mixed toward white.

#5d6066

#7b7f87

#9c9fa5

#bdbfc3

#dedfe1

Tones

Color #3f4145 mixed toward gray.

#404145

#404144

#414244

#414243

#424243

Accessibility

Aa White text on this color

10.23:1

Aa Black text on this color

2.05:1

White text reads better on this background (10.23:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#404044 · ΔE 1.3

Deuteranopia

#404044 · ΔE 1.3

Tritanopia

#3f4343 · ΔE 3.2

Achromatopsia

#414141 · ΔE 2.6

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

Code

CSS

background-color: #3f4145;

Tailwind (arbitrary value)

bg-[#3f4145]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#3f4145 (#3f4145) is rgb(63, 65, 69) in RGB.

No, #3f4145 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 #3f4145, or check how it holds up for accessibility.

Generate a palette → Check contrast