#404757

Color #404757

A muted dark blue.

Closest named color Charcoal #36454f · ΔE 5.43 Nearest Tailwind class gray-700 #364153 · ΔE 2.7

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Conversions

HEX

#404757

RGB

rgb(64, 71, 87)

HSL

hsl(221.7, 15.2%, 29.6%)

HSV / HSB

hsv(221.7, 26.4%, 34.1%)

CMYK

cmyk(26.4%, 18.4%, 0%, 65.9%)

LAB

lab(30.12, 1.26, -10.44)

LCH

lch(30.12, 10.52, 276.88)

OKLCH

oklch(39.8%, 0.0287, 266.6)

HWB

hwb(221.7, 25.1%, 65.9%)

Harmony colors

Complementary

#575040

Analogous

#405257

#404757

#444057

Triadic

#404757

#574047

#475740

Split-complementary

#404757

#574440

#525740

Tetradic

#404757

#504057

#575040

#475740

Square

#404757

#574052

#575040

#405744

Shades

Color #404757 mixed toward black.

#353b48

#2b2f3a

#20242b

#15181d

#0b0c0e

Tints

Color #404757 mixed toward white.

#596379

#75809a

#98a0b3

#bac0cc

#dddfe6

Tones

Color #404757 mixed toward gray.

#424855

#444853

#464951

#484a4f

#4a4b4d

Accessibility

Aa White text on this color

9.3:1

Aa Black text on this color

2.26:1

White text reads better on this background (9.3:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#434353 · ΔE 3.8

Deuteranopia

#434253 · ΔE 4.6

Tritanopia

#405150 · ΔE 12.2

Achromatopsia

#474747 · ΔE 8.6

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

Code

CSS

background-color: #404757;

Tailwind (arbitrary value)

bg-[#404757]

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

#404757 (#404757) is rgb(64, 71, 87) in RGB.

No, #404757 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 #404757, or check how it holds up for accessibility.

Generate a palette → Check contrast