#403937

Color #403937

A nearly neutral, gray-leaning dark red.

Closest named color Charcoal #36454f · ΔE 12.47 Nearest Tailwind class taupe-700 #473c39 · ΔE 2.5

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Conversions

HEX

#403937

RGB

rgb(64, 57, 55)

HSL

hsl(13.3, 7.6%, 23.3%)

HSV / HSB

hsv(13.3, 14.1%, 25.1%)

CMYK

cmyk(0%, 10.9%, 14.1%, 74.9%)

LAB

lab(24.61, 2.64, 2.36)

LCH

lch(24.61, 3.54, 41.79)

OKLCH

oklch(35.1%, 0.0104, 36.43)

HWB

hwb(13.3, 21.6%, 74.9%)

Harmony colors

Complementary

#373e40

Analogous

#403739

#403937

#403d37

Triadic

#403937

#374039

#393740

Split-complementary

#403937

#37403d

#373940

Tetradic

#403937

#3e4037

#373e40

#393740

Square

#403937

#394037

#373e40

#3d3740

Shades

Color #403937 mixed toward black.

#352f2e

#2b2625

#201c1b

#151312

#0b0909

Tints

Color #403937 mixed toward white.

#635855

#867773

#a59996

#c3bbb9

#e1dddc

Tones

Color #403937 mixed toward gray.

#3f3938

#3e3a38

#3e3a39

#3d3b3a

#3c3b3b

Accessibility

Aa White text on this color

11.3:1

Aa Black text on this color

1.86:1

White text reads better on this background (11.3:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3d3d37 · ΔE 5.9

Deuteranopia

#3d3e38 · ΔE 6.5

Tritanopia

#403838 · ΔE 1.5

Achromatopsia

#3a3a3a · ΔE 4.2

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

Code

CSS

background-color: #403937;

Tailwind (arbitrary value)

bg-[#403937]

Related colors

Dark Salmon #e9967a

Coral #ff7f50

Orange Red #ff4500

Light Salmon #ffa07a

Tomato #ff6347

Sienna #a0522d

Frequently asked questions

#403937 (#403937) is rgb(64, 57, 55) in RGB.

No, #403937 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 #403937, or check how it holds up for accessibility.

Generate a palette → Check contrast