#3b3f40

Color #3b3f40

A nearly neutral, gray-leaning dark cyan.

Closest named color Charcoal #36454f · ΔE 7.31 Nearest Tailwind class neutral-700 #404040 · ΔE 2.4

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

Conversions

HEX

#3b3f40

RGB

rgb(59, 63, 64)

HSL

hsl(192, 4.1%, 24.1%)

HSV / HSB

hsv(192, 7.8%, 25.1%)

CMYK

cmyk(7.8%, 1.6%, 0%, 74.9%)

LAB

lab(26.32, -1.44, -1.19)

LCH

lch(26.32, 1.87, 219.57)

OKLCH

oklch(36.4%, 0.0057, 214.25)

HWB

hwb(192, 23.1%, 74.9%)

Harmony colors

Complementary

#403c3b

Analogous

#3b403e

#3b3f40

#3b3c40

Triadic

#3b3f40

#403b3f

#3f403b

Split-complementary

#3b3f40

#403b3c

#403e3b

Tetradic

#3b3f40

#3c3b40

#403c3b

#3f403b

Square

#3b3f40

#3e3b40

#403c3b

#3c403b

Shades

Color #3b3f40 mixed toward black.

#313435

#272a2b

#1d1f20

#141515

#0a0a0b

Tints

Color #3b3f40 mixed toward white.

#5a6062

#798183

#9aa1a2

#bcc0c1

#dde0e0

Tones

Color #3b3f40 mixed toward gray.

#3b3f40

#3c3e3f

#3d3e3e

Accessibility

Aa White text on this color

10.65:1

Aa Black text on this color

1.97:1

White text reads better on this background (10.65:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3d3d40 · ΔE 3.1

Deuteranopia

#3d3c40 · ΔE 4.2

Tritanopia

#3b4040 · ΔE 1

Achromatopsia

#3e3e3e · ΔE 2.3

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

Code

CSS

background-color: #3b3f40;

Tailwind (arbitrary value)

bg-[#3b3f40]

Related colors

Light Blue #add8e6

Deep Sky Blue #00bfff

Powder Blue #b0e0e6

Sky Blue #87ceeb

Cadet Blue #5f9ea0

Light Sky Blue #87cefa

Frequently asked questions

#3b3f40 (#3b3f40) is rgb(59, 63, 64) in RGB.

No, #3b3f40 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 #3b3f40, or check how it holds up for accessibility.

Generate a palette → Check contrast