#373943

Color #373943

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 6.65 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 2.7

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

Conversions

HEX

#373943

RGB

rgb(55, 57, 67)

HSL

hsl(230, 9.8%, 23.9%)

HSV / HSB

hsv(230, 17.9%, 26.3%)

CMYK

cmyk(17.9%, 14.9%, 0%, 73.7%)

LAB

lab(24.14, 1.64, -6.45)

LCH

lch(24.14, 6.66, 284.27)

OKLCH

oklch(34.7%, 0.0176, 276.52)

HWB

hwb(230, 21.6%, 73.7%)

Harmony colors

Complementary

#434137

Analogous

#373f43

#373943

#3b3743

Triadic

#373943

#433739

#394337

Split-complementary

#373943

#433b37

#3f4337

Tetradic

#373943

#413743

#434137

#394337

Square

#373943

#43373f

#434137

#37433b

Shades

Color #373943 mixed toward black.

#2e2f38

#25262d

#1b1c21

#121316

#09090b

Tints

Color #373943 mixed toward white.

#545766

#71758a

#9498a7

#b8bac5

#dbdde2

Tones

Color #373943 mixed toward gray.

#383a42

#393a41

#3a3b40

#3b3c3f

#3c3c3e

Accessibility

Aa White text on this color

11.48:1

Aa Black text on this color

1.83:1

White text reads better on this background (11.48:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#383841 · ΔE 1.2

Deuteranopia

#383840 · ΔE 1.4

Tritanopia

#373f3e · ΔE 8.6

Achromatopsia

#393939 · ΔE 6

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

Code

CSS

background-color: #373943;

Tailwind (arbitrary value)

bg-[#373943]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#373943 (#373943) is rgb(55, 57, 67) in RGB.

No, #373943 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 #373943, or check how it holds up for accessibility.

Generate a palette → Check contrast