#3f4247

Color #3f4247

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 5.54 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 2.6

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Conversions

HEX

#3f4247

RGB

rgb(63, 66, 71)

HSL

hsl(217.5, 6%, 26.3%)

HSV / HSB

hsv(217.5, 11.3%, 27.8%)

CMYK

cmyk(11.3%, 7%, 0%, 72.2%)

LAB

lab(27.87, -0.06, -3.46)

LCH

lch(27.87, 3.46, 269.01)

OKLCH

oklch(37.8%, 0.0094, 260.84)

HWB

hwb(217.5, 24.7%, 72.2%)

Harmony colors

Complementary

#47443f

Analogous

#3f4647

#3f4247

#403f47

Triadic

#3f4247

#473f42

#42473f

Split-complementary

#3f4247

#47403f

#46473f

Tetradic

#3f4247

#443f47

#47443f

#42473f

Square

#3f4247

#473f46

#47443f

#3f4740

Shades

Color #3f4247 mixed toward black.

#35373b

#2a2c2f

#202124

#151618

#0b0b0c

Tints

Color #3f4247 mixed toward white.

#5c6168

#7a8089

#9ba0a7

#bdbfc4

#dedfe2

Tones

Color #3f4247 mixed toward gray.

#404246

#414345

#424344

Accessibility

Aa White text on this color

10.09:1

Aa Black text on this color

2.08:1

White text reads better on this background (10.09:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#404046 · ΔE 2.1

Deuteranopia

#404046 · ΔE 2.1

Tritanopia

#3f4545 · ΔE 4.2

Achromatopsia

#424242 · ΔE 3.2

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

Code

CSS

background-color: #3f4247;

Tailwind (arbitrary value)

bg-[#3f4247]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#3f4247 (#3f4247) is rgb(63, 66, 71) in RGB.

No, #3f4247 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.

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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 #3f4247, or check how it holds up for accessibility.

Generate a palette → Check contrast