#31373b

Color #31373b

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 7.55 Nearest Tailwind class mist-700 #394447 · ΔE 4.8

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Conversions

HEX

#31373b

RGB

rgb(49, 55, 59)

HSL

hsl(204, 9.3%, 21.2%)

HSV / HSB

hsv(204, 16.9%, 23.1%)

CMYK

cmyk(16.9%, 6.8%, 0%, 76.9%)

LAB

lab(22.66, -1.52, -3.36)

LCH

lch(22.66, 3.69, 245.66)

OKLCH

oklch(33.3%, 0.0108, 237.04)

HWB

hwb(204, 19.2%, 76.9%)

Harmony colors

Complementary

#3b3531

Analogous

#313b3a

#31373b

#31323b

Triadic

#31373b

#3b3137

#373b31

Split-complementary

#31373b

#3b3132

#3b3a31

Tetradic

#31373b

#35313b

#3b3531

#373b31

Square

#31373b

#3a313b

#3b3531

#323b31

Shades

Color #31373b mixed toward black.

#292e31

#212527

#191c1e

#101214

#08090a

Tints

Color #31373b mixed toward white.

#4f5960

#6e7b84

#919ca4

#b6bdc2

#dadee1

Tones

Color #31373b mixed toward gray.

#32373a

#333739

#343739

#343638

#353637

Accessibility

Aa White text on this color

12.07:1

Aa Black text on this color

1.74:1

White text reads better on this background (12.07:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#34343a · ΔE 4.3

Deuteranopia

#33333a · ΔE 4.7

Tritanopia

#313939 · ΔE 3.2

Achromatopsia

#363636 · ΔE 3.7

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

Code

CSS

background-color: #31373b;

Tailwind (arbitrary value)

bg-[#31373b]

Related colors

Charcoal #36454f

Light Sky Blue #87cefa

Steel Blue #4682b4

Alice Blue #f0f8ff

Dodger Blue #1e90ff

Light Slate Gray #778899

Frequently asked questions

#31373b (#31373b) is rgb(49, 55, 59) in RGB.

No, #31373b 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 #31373b, or check how it holds up for accessibility.

Generate a palette → Check contrast