#28373a

Color #28373a

A muted very dark cyan.

Closest named color Charcoal #36454f · ΔE 7.93 Nearest Tailwind class mist-700 #394447 · ΔE 4.8

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Conversions

HEX

#28373a

RGB

rgb(40, 55, 58)

HSL

hsl(190, 18.4%, 19.2%)

HSV / HSB

hsv(190, 31%, 22.7%)

CMYK

cmyk(31%, 5.2%, 0%, 77.3%)

LAB

lab(21.9, -5.28, -3.88)

LCH

lch(21.9, 6.55, 216.31)

OKLCH

oklch(32.5%, 0.0205, 211.2)

HWB

hwb(190, 15.7%, 77.3%)

Harmony colors

Complementary

#3a2b28

Analogous

#283a34

#28373a

#282e3a

Triadic

#28373a

#3a2837

#373a28

Split-complementary

#28373a

#3a282e

#3a3428

Tetradic

#28373a

#2b283a

#3a2b28

#373a28

Square

#28373a

#34283a

#3a2b28

#2e3a28

Shades

Color #28373a mixed toward black.

#212e30

#1b2527

#141b1d

#0d1213

#07090a

Tints

Color #28373a mixed toward white.

#445e63

#60848b

#85a5ab

#aec3c7

#d6e1e3

Tones

Color #28373a mixed toward gray.

#293638

#2b3537

#2c3435

#2e3334

#2f3232

Accessibility

Aa White text on this color

12.37:1

Aa Black text on this color

1.7:1

White text reads better on this background (12.37:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2f2f39 · ΔE 10.4

Deuteranopia

#2e2d39 · ΔE 11.9

Tritanopia

#293939 · ΔE 2.2

Achromatopsia

#343434 · ΔE 7.4

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

Code

CSS

background-color: #28373a;

Tailwind (arbitrary value)

bg-[#28373a]

Related colors

Powder Blue #b0e0e6

Light Blue #add8e6

Deep Sky Blue #00bfff

Sky Blue #87ceeb

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Frequently asked questions

#28373a (#28373a) is rgb(40, 55, 58) in RGB.

No, #28373a 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 #28373a, or check how it holds up for accessibility.

Generate a palette → Check contrast