#283137

Color #283137

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 9.19 Nearest Tailwind class mist-800 #22292b · ΔE 3.5

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Conversions

HEX

#283137

RGB

rgb(40, 49, 55)

HSL

hsl(204, 15.8%, 18.6%)

HSV / HSB

hsv(204, 27.3%, 21.6%)

CMYK

cmyk(27.3%, 10.9%, 0%, 78.4%)

LAB

lab(19.73, -2.17, -5.08)

LCH

lch(19.73, 5.52, 246.87)

OKLCH

oklch(30.7%, 0.0164, 237.18)

HWB

hwb(204, 15.7%, 78.4%)

Harmony colors

Complementary

#372e28

Analogous

#283735

#283137

#282937

Triadic

#283137

#372831

#313728

Split-complementary

#283137

#372829

#373528

Tetradic

#283137

#2e2837

#372e28

#313728

Square

#283137

#352837

#372e28

#293728

Shades

Color #283137 mixed toward black.

#21292e

#1b2125

#14181b

#0d1012

#070809

Tints

Color #283137 mixed toward white.

#45555f

#627887

#879aa8

#afbcc5

#d7dde2

Tones

Color #283137 mixed toward gray.

#293136

#2a3034

#2c3033

#2d3032

#2e3031

Accessibility

Aa White text on this color

13.25:1

Aa Black text on this color

1.58:1

White text reads better on this background (13.25:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2c2c36 · ΔE 6.7

Deuteranopia

#2c2b35 · ΔE 7.3

Tritanopia

#293434 · ΔE 4.5

Achromatopsia

#303030 · ΔE 5.3

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

Code

CSS

background-color: #283137;

Tailwind (arbitrary value)

bg-[#283137]

Related colors

Charcoal #36454f

Light Sky Blue #87cefa

Steel Blue #4682b4

Alice Blue #f0f8ff

Dodger Blue #1e90ff

Light Slate Gray #778899

Frequently asked questions

#283137 (#283137) is rgb(40, 49, 55) in RGB.

No, #283137 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.

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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 #283137, or check how it holds up for accessibility.

Generate a palette → Check contrast