#40404f

Color #40404f

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 7.03 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 4.2

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

Conversions

HEX

#40404f

RGB

rgb(64, 64, 79)

HSL

hsl(240, 10.5%, 28%)

HSV / HSB

hsv(240, 19%, 31%)

CMYK

cmyk(19%, 19%, 0%, 69%)

LAB

lab(27.63, 3.66, -9.03)

LCH

lch(27.63, 9.74, 292.06)

OKLCH

oklch(37.8%, 0.0255, 285.02)

HWB

hwb(240, 25.1%, 69%)

Harmony colors

Complementary

#4f4f40

Analogous

#40474f

#40404f

#47404f

Triadic

#40404f

#4f4040

#404f40

Split-complementary

#40404f

#4f4740

#474f40

Tetradic

#40404f

#4f404f

#4f4f40

#404f40

Square

#40404f

#4f4047

#4f4f40

#404f47

Shades

Color #40404f mixed toward black.

#353542

#2b2b35

#202027

#15151a

#0b0b0d

Tints

Color #40404f mixed toward white.

#5b5b71

#787891

#9a9aad

#bbbbc8

#dddde4

Tones

Color #40404f mixed toward gray.

#41414e

#42424c

#44444b

#45454a

#464649

Accessibility

Aa White text on this color

10.17:1

Aa Black text on this color

2.06:1

White text reads better on this background (10.17:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#40404c · ΔE 1.5

Deuteranopia

#40404b · ΔE 2

Tritanopia

#404948 · ΔE 11.8

Achromatopsia

#414141 · ΔE 8.5

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

Code

CSS

background-color: #40404f;

Tailwind (arbitrary value)

bg-[#40404f]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#40404f (#40404f) is rgb(64, 64, 79) in RGB.

No, #40404f 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.

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Build something with this color

Generate a full palette from #40404f, or check how it holds up for accessibility.

Generate a palette → Check contrast